{"id":2384,"date":"2025-01-10T05:10:58","date_gmt":"2025-01-10T05:10:58","guid":{"rendered":"https:\/\/www.retopz.com\/?p=2384"},"modified":"2025-06-12T08:05:27","modified_gmt":"2025-06-12T08:05:27","slug":"metallography-in-the-tungsten-carbide-industry-an-explanatory-overview","status":"publish","type":"post","link":"https:\/\/www.retopz.com\/ko\/metallography-in-the-tungsten-carbide-industry-an-explanatory-overview\/","title":{"rendered":"\ud145\uc2a4\ud150 \uce74\ubc14\uc774\ub4dc \uacf5\uad6c\uc758 \uae08\uc18d\ud559 \uc774\ud574"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"2384\" class=\"elementor elementor-2384\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c3bb6ad e-flex e-con-boxed e-con e-parent\" data-id=\"c3bb6ad\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b62115a elementor-widget elementor-widget-text-editor\" data-id=\"b62115a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><img decoding=\"async\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/06\/Understanding-Metallography-in-Tungsten-Carbide-Tools.png\" \/><\/p><p>\uae08\uc18d\ud559\uc740 \uae08\uc18d \ubc0f \ud569\uae08\uc758 \ubbf8\uc138 \uad6c\uc870\ub97c \uc5f0\uad6c\ud558\ub294 \ub370 \uc0ac\uc6a9\ub418\ub294 \uacfc\ud559\uc801 \ubc29\ubc95\uc774\uba70, \ud145\uc2a4\ud150 \uce74\ubc14\uc774\ub4dc \uacf5\uad6c\uc758 \uac1c\ubc1c, \ud488\uc9c8 \ubcf4\uc99d \ubc0f \ud30c\uc190 \ubd84\uc11d\uc5d0 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. \ucd08\uacbd\ud569\uae08 \ubd84\uc57c\uc5d0\uc11c \uae08\uc18d\ud559\uc740 \uacb0\uc815\ub9bd \ud06c\uae30, \uc0c1 \ubd84\ud3ec, \uae30\uacf5\ub960, \uacb0\ud569\uc7ac\uc758 \uc644\uc804\uc131\uc5d0 \ub300\ud55c \ud544\uc218\uc801\uc778 \ud1b5\ucc30\ub825\uc744 \uc81c\uacf5\ud558\uba70, \uc774\ub7ec\ud55c \ubaa8\ub4e0 \uc694\uc18c\ub294 \ucd08\uacbd \uacf5\uad6c\uc758 \uc131\ub2a5\uacfc \uc2e0\ub8b0\uc131\uc5d0 \uc9c1\uc811\uc801\uc778 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-269d9c7 elementor-widget elementor-widget-text-editor\" data-id=\"269d9c7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 data-start=\"725\" data-end=\"750\"><strong>\uae08\uc18d\ud559\uc774\ub780 \ubb34\uc5c7\uc778\uac00?<\/strong><\/h2><p data-start=\"752\" data-end=\"1034\"><img decoding=\"async\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/06\/What-Is-Metallography-1.png\" \/><\/p><p data-start=\"752\" data-end=\"1034\">\uae08\uc18d\ud559\uc740 \ud604\ubbf8\uacbd \uac80\uc0ac \uae30\ubc95\uc744 \uc774\uc6a9\ud558\uc5ec \uae08\uc18d \ubc0f \ud569\uae08\uc758 \uad6c\uc870\uc640 \ud2b9\uc131\uc744 \uc5f0\uad6c\ud558\ub294 \ud559\ubb38\uc785\ub2c8\ub2e4. \uc808\ub2e8, \uc7a5\ucc29, \uc5f0\uc0ad, \uc5f0\ub9c8, \uc5d0\uce6d \ub4f1 \uc77c\ub828\uc758 \uc900\ube44 \ub2e8\uacc4\ub97c \uac70\uce5c \ud6c4 \uad11\ud559 \ub610\ub294 \uc804\uc790 \ud604\ubbf8\uacbd\uc73c\ub85c \uad00\ucc30\ud569\ub2c8\ub2e4.<\/p><p data-start=\"1036\" data-end=\"1255\">\ucf54\ubc1c\ud2b8(Co)\uc640 \uacb0\ud569\ub41c \ud145\uc2a4\ud150 \uce74\ubc14\uc774\ub4dc(WC)\uc640 \uac19\uc740 \uc2dc\uba58\ud2b8 \uce74\ubc14\uc774\ub4dc\uc758 \uacbd\uc6b0 \uae08\uc18d\ud559\uc740 \uc721\uc548\uc73c\ub85c\ub294 \ubcf4\uc774\uc9c0 \uc54a\uc9c0\ub9cc \uc7ac\ub8cc\uc758 \ub0b4\ubd80 \uad6c\uc870\ub97c \ubcf4\uc5ec\uc90d\ub2c8\ub2e4. <a href=\"https:\/\/www.retopz.com\/ko\/quality-assurance\/\">\ud488\uc9c8 \ubcf4\uc7a5<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b16f90c elementor-widget elementor-widget-text-editor\" data-id=\"b16f90c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 data-start=\"1262\" data-end=\"1326\"><strong>\ud145\uc2a4\ud150 \uce74\ubc14\uc774\ub4dc \uacf5\uad6c \uc0dd\uc0b0\uc5d0\uc11c \uae08\uc18d\ud559\uc774 \uc911\uc694\ud55c \uc774\uc720<\/strong><\/h2><p><img decoding=\"async\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/06\/Metallography-Matters.png\" \/><\/p><h4 data-start=\"1328\" data-end=\"1362\"><strong>1. <a href=\"https:\/\/www.retopz.com\/ko\/microstructure-analysis-in-the-tungsten-carbide-industry-an-explanatory-overview\/\">\ubbf8\uc138\uad6c\uc870 \ubd84\uc11d<\/a><\/strong><\/h4><p data-start=\"1363\" data-end=\"1489\">\ud145\uc2a4\ud150 \uce74\ubc14\uc774\ub4dc\ub294 \uacbd\uc9c8 WC \uc785\uc790\uc640 \uc5f0\uc131 \ucf54\ubc1c\ud2b8 \ubc14\uc778\ub354\ub85c \uad6c\uc131\ub41c \ubcf5\ud569 \uc18c\uc7ac\uc785\ub2c8\ub2e4. \uae08\uc18d\uc870\uc9c1\ud559\uc740 \ub2e4\uc74c \uc0ac\ud56d\uc744 \uc2dc\uac01\ud654\ud558\ub294 \ub370 \ub3c4\uc6c0\uc774 \ub429\ub2c8\ub2e4.<\/p><ul data-start=\"1490\" data-end=\"1622\"><li data-start=\"1490\" data-end=\"1515\"><p data-start=\"1492\" data-end=\"1515\">\ud654\uc7a5\uc2e4 <a href=\"https:\/\/www.retopz.com\/ko\/understanding-grain-size-in-tungsten-carbide-tools\/\">\uc785\uc790 \ud06c\uae30<\/a> \uadf8\ub9ac\uace0 \ubaa8\uc591<\/p><\/li><li data-start=\"1516\" data-end=\"1552\"><p data-start=\"1518\" data-end=\"1552\">\ucf54\ubc1c\ud2b8(\ubc14\uc778\ub354) \uc0c1 \ubd84\ud3ec<\/p><\/li><li data-start=\"1553\" data-end=\"1599\"><p data-start=\"1555\" data-end=\"1599\">\uacb0\uc815\ub9bd\uacc4\uc0c1\uacfc 2\ucc28 \ud0c4\ud654\ubb3c<\/p><\/li><li data-start=\"1600\" data-end=\"1622\"><p data-start=\"1602\" data-end=\"1622\"><a href=\"https:\/\/www.retopz.com\/ko\/porosity-in-the-tungsten-carbide-industry-an-explanatory-overview\/\">\ub2e4\uacf5\uc131<\/a> \uadf8\ub9ac\uace0 \uacb0\ud568<\/p><\/li><\/ul><p data-start=\"1624\" data-end=\"1704\">\uc774\ub7ec\ud55c \uac01 \uae30\ub2a5\uc740 \ub3c4\uad6c\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4. <a href=\"https:\/\/www.retopz.com\/ko\/hardness-in-the-tungsten-carbide-industry-a-comprehensive-definition\/\">\uacbd\ub3c4<\/a>, <a href=\"https:\/\/www.retopz.com\/ko\/toughness-in-the-tungsten-carbide-industry-a-comprehensive-definition\/\">\uac15\uc778\ud568<\/a>, \uadf8\ub9ac\uace0 <a href=\"https:\/\/www.retopz.com\/ko\/wear-resistance-in-the-tungsten-carbide-industry-an-explanatory-overview\/\">\ub0b4\ub9c8\ubaa8\uc131<\/a>.<\/p><h4 data-start=\"1706\" data-end=\"1732\"><strong>2. \ud488\uc9c8 \uad00\ub9ac<\/strong><\/h4><p data-start=\"1733\" data-end=\"1772\">\uae08\uc18d\uc870\uc9c1 \uac80\uc0ac\ub294 \ub2e4\uc74c \uc0ac\ud56d\uc744 \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/p><ul data-start=\"1773\" data-end=\"1973\"><li data-start=\"1773\" data-end=\"1842\"><p data-start=\"1775\" data-end=\"1842\">\uc785\uc790 \ud06c\uae30\uac00 \uc0ac\uc591 \ub0b4\uc5d0 \uc788\uc2b5\ub2c8\ub2e4(\uc608: \uc11c\ube0c\ub9c8\uc774\ud06c\ub860, \ucd08\ubbf8\uc138)<\/p><\/li><li data-start=\"1843\" data-end=\"1895\"><p data-start=\"1845\" data-end=\"1895\">\ubc14\uc778\ub354\ub294 \uade0\uc77c\ud558\uac8c \ubd84\ud3ec\ub418\uc5b4 \uc788\uc73c\uba70 \uae30\uacf5\uc774 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p><\/li><li data-start=\"1896\" data-end=\"1973\"><p data-start=\"1898\" data-end=\"1973\">\ud751\uc5f0, \uc5d0\ud0c0\uc0c1(\u03b7), \uc790\uc720\ud145\uc2a4\ud150\uacfc \uac19\uc740 \ube44\uc815\uc0c1\uc801\uc778 \uc0c1\uc740 \uc874\uc7ac\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p><\/li><\/ul><p data-start=\"1975\" data-end=\"2105\">\uc774\ub294 \uc77c\uad00\uc131\uc744 \ubcf4\uc7a5\ud558\uace0 \ub2e4\uc74c\uacfc \uac19\uc740 \uae4c\ub2e4\ub85c\uc6b4 \uc751\uc6a9 \ud504\ub85c\uadf8\ub7a8 \uc911 \ub3c4\uad6c \uace0\uc7a5\uc744 \ubc29\uc9c0\ud569\ub2c8\ub2e4. <a href=\"https:\/\/www.retopz.com\/ko\/tungsten-carbide-tools-for-metalworking-industry\/\">\uac00\uacf5<\/a>, <a href=\"https:\/\/www.retopz.com\/ko\/tungsten-carbide-tools-for-mining-and-construction\/\">\ucc44\uad11<\/a>, \ub610\ub294 <a href=\"https:\/\/www.retopz.com\/ko\/oil-natural-gas-wear-parts\/\">\uc11d\uc720 \ubc0f \uac00\uc2a4 \uc2dc\ucd94<\/a>.<\/p><h4 data-start=\"2107\" data-end=\"2139\"><strong>3. \uc2e4\ud328 \uc870\uc0ac<\/strong><\/h4><p data-start=\"2140\" data-end=\"2232\">\ucd08\uacbd \uacf5\uad6c\uac00 \uc870\uae30\uc5d0 \ud30c\uc190\ub418\uba74 \uae08\uc18d\uc870\uc9c1\ud559\uc744 \uc0ac\uc6a9\ud558\uc5ec \ub2e4\uc74c\uacfc \uac19\uc740 \uadfc\ubcf8 \uc6d0\uc778\uc744 \ud30c\uc545\ud569\ub2c8\ub2e4.<\/p><ul data-start=\"2233\" data-end=\"2326\"><li data-start=\"2233\" data-end=\"2253\"><p data-start=\"2235\" data-end=\"2253\"><a href=\"https:\/\/www.retopz.com\/ko\/binder-material-in-the-tungsten-carbide-industry-an-explanatory-overview\/\">\uc811\ud569\uc7ac<\/a> \uace0\uac08<\/p><\/li><li data-start=\"2254\" data-end=\"2273\"><p data-start=\"2256\" data-end=\"2273\">\uc5f4 \ud53c\ub85c<\/p><\/li><li data-start=\"2274\" data-end=\"2292\"><p data-start=\"2276\" data-end=\"2292\">\ubbf8\uc138 \uade0\uc5f4<\/p><\/li><li data-start=\"2293\" data-end=\"2326\"><p data-start=\"2295\" data-end=\"2326\">\uc5f4\uc5d0 \uc758\ud55c \uc0c1\ubcc0\ud654<\/p><\/li><\/ul><p data-start=\"2328\" data-end=\"2402\">\uadf8\ub7f0 \ub2e4\uc74c \uc81c\uc870 \ub610\ub294 \uc0ac\uc6a9 \uc870\uac74\uc5d0\uc11c \uc2dc\uc815 \uc870\uce58\ub97c \ucde8\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1cb5ce7 elementor-widget elementor-widget-text-editor\" data-id=\"1cb5ce7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2><strong>\ucd08\uacbd \uacf5\uad6c\ub97c \uc704\ud55c \uc8fc\uc694 \uae08\uc18d \uc870\uc9c1 \uae30\uc220<\/strong><\/h2><p><img decoding=\"async\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/06\/Key-Metallographic-Techniques-for-Carbide-Tools.png\" \/><\/p><table><thead><tr><th>\uae30\uc220<\/th><th>\ubaa9\uc801<\/th><\/tr><\/thead><tbody><tr><td><strong>\uad11\ud559\ud604\ubbf8\uacbd<\/strong><\/td><td>\uc785\uc790 \ud06c\uae30, \ub2e4\uacf5\uc131, \uacb0\ud569\uc81c \ud3c9\uac00<\/td><\/tr><tr><td><strong>\uc8fc\uc0ac \uc804\uc790 \ud604\ubbf8\uacbd(SEM)<\/strong><\/td><td>\ubbf8\uc138\uade0\uc5f4, \uc0c1\uacbd\uacc4\uc758 \uace0\ud574\uc0c1\ub3c4 \uc774\ubbf8\uc9d5<\/td><\/tr><tr><td><strong>\uc5d0\uce6d(\ubb34\ub77c\uce74\ubbf8 \uc2dc\uc57d \ub4f1)<\/strong><\/td><td>WC \uacb0\uc815\ub9bd\uacc4\uc640 \ucf54\ubc1c\ud2b8 \ud480\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/td><\/tr><tr><td><strong>\uc774\ubbf8\uc9c0 \ubd84\uc11d \uc18c\ud504\ud2b8\uc6e8\uc5b4<\/strong><\/td><td>\uc0c1 \ud568\ub7c9, \uc785\uc790 \ubd84\ud3ec\ub97c \uc815\ub7c9\ud654\ud569\ub2c8\ub2e4.<\/td><\/tr><\/tbody><\/table><p>\uc774\ub7ec\ud55c \uae30\uc220\uc740 \uc5c4\uaca9\ud55c \ud488\uc9c8 \ud45c\uc900\uc744 \ud655\ub9bd\ud558\uace0 \uc720\uc9c0\ud558\ub294 \ub370 \ub3c4\uc6c0\uc774 \ub429\ub2c8\ub2e4. <a href=\"https:\/\/www.retopz.com\/ko\/\">\ud145\uc2a4\ud150 \uce74\ubc14\uc774\ub4dc \uc81c\uc870<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-453ad96 elementor-widget elementor-widget-text-editor\" data-id=\"453ad96\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 data-start=\"3094\" data-end=\"3125\"><strong>\ud45c\uc900 \ubc0f \ubd84\ub958<\/strong><\/h2><p data-start=\"3127\" data-end=\"3236\"><img decoding=\"async\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/06\/Standards-and-Classification.png\" \/><\/p><p data-start=\"3127\" data-end=\"3236\">ISO \ubc0f ASTM\uacfc \uac19\uc740 \uc870\uc9c1\uc740 \uc2dc\uba58\ud2b8 \uce74\ubc14\uc774\ub4dc\uc5d0 \ub300\ud55c \ud45c\uc900\ud654\ub41c \uae08\uc18d\ud559\uc801 \ubc29\ubc95\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p><ul data-start=\"3237\" data-end=\"3364\"><li data-start=\"3237\" data-end=\"3300\"><p data-start=\"3239\" data-end=\"3300\">ASTM B657 \u2013 WC-Co\uc758 \uae08\uc18d\uc870\uc9c1\ud559\uc801 \uc900\ube44 \uac00\uc774\ub4dc<\/p><\/li><li data-start=\"3301\" data-end=\"3364\"><p data-start=\"3303\" data-end=\"3364\">ISO 4499 \u2013 \uad6c\uc870\uc758 \uc774\ubbf8\uc9c0 \ubd84\uc11d \ubc0f \ubd84\ub958<\/p><\/li><\/ul><p data-start=\"3366\" data-end=\"3420\">\uc774\ub97c \ud1b5\ud574 \ud488\uc9c8 \ud3c9\uac00\uc758 \uc804\ubc18\uc801\uc778 \uc77c\uad00\uc131\uc774 \ubcf4\uc7a5\ub429\ub2c8\ub2e4.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d6c2eea elementor-widget elementor-widget-text-editor\" data-id=\"d6c2eea\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 data-start=\"3427\" data-end=\"3440\"><strong>\uacb0\ub860<\/strong><\/h2><p data-start=\"3442\" data-end=\"3894\"><img decoding=\"async\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/06\/Visual-metaphor.png\" \/><\/p><p data-start=\"3442\" data-end=\"3894\">\uae08\uc18d\ud559\uc740 \ud145\uc2a4\ud150 \uce74\ubc14\uc774\ub4dc \ubd84\uc57c\uc5d0\uc11c \uc5c6\uc5b4\uc11c\ub294 \uc548 \ub420 \ub3c4\uad6c\uc785\ub2c8\ub2e4. \uc81c\uc870\uc5c5\uccb4\ub294 \uae08\uc18d\ud559\uc744 \ud1b5\ud574 \ubbf8\uc138 \uad6c\uc870\ub97c \uc81c\uc5b4\ud558\uace0, \uacf5\uad6c \uc218\uba85\uc744 \ud5a5\uc0c1\uc2dc\ud0a4\uba70, \uc0dd\uc0b0 \uc624\ub958\ub97c \uc904\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc5f0\uad6c \uac1c\ubc1c, \uacf5\uc815 \ucd5c\uc801\ud654, \ub610\ub294 \uace0\uc7a5 \uc9c4\ub2e8 \ub4f1 \uc5b4\ub5a4 \ubaa9\uc801\uc5d0\uc11c\ub4e0 \uae08\uc18d\ud559\uc740 \uc7ac\ub8cc \uacfc\ud559\uacfc \uc2e4\uc81c \uacf5\uad6c \uc131\ub2a5 \uac04\uc758 \uac04\uadf9\uc744 \uba54\uc6c1\ub2c8\ub2e4. \ucd08\uacbd \uacf5\uad6c\uac00 \ub354\uc6b1 \uac00\ud639\ud55c \ud658\uacbd\uc5d0\uc11c \uacc4\uc18d \uc0ac\uc6a9\ub428\uc5d0 \ub530\ub77c \uae08\uc18d\ud559\uc740 \ud601\uc2e0\uacfc \ud488\uc9c8 \uad00\ub9ac\uc758 \ud575\uc2ec\uc73c\ub85c \ub0a8\uc744 \uac83\uc785\ub2c8\ub2e4.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Metallography is a scientific method used to study the microstructure of metals and alloys, and it plays a vital role in the development, quality assurance, and failure analysis of tungsten carbide tools. In the field of cemented carbides, metallography provides essential insight into grain size, phase distribution, porosity, and binder integrity\u2014all of which directly affect [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6162,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2384","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-carbide-academy"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.8 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Understanding Metallography in Tungsten Carbide Tools<\/title>\n<meta name=\"description\" content=\"Explore metallography and its crucial role in studying metals and alloys for quality assurance and failure analysis.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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