{"id":8908,"date":"2016-01-22T16:44:38","date_gmt":"2016-01-22T16:44:38","guid":{"rendered":"https:\/\/staging.asminternational.org\/hts-new\/results\/-\/journal_content\/56\/10192\/26120368\/NEWS\/"},"modified":"2023-02-07T04:49:27","modified_gmt":"2023-02-07T04:49:27","slug":"one-minute-mentor-secondary-hardening-in-tool-steels","status":"publish","type":"post","link":"https:\/\/www.asminternational.org\/hts\/one-minute-mentor-secondary-hardening-in-tool-steels\/","title":{"rendered":"One Minute Mentor: Secondary Hardening in Tool Steels"},"content":{"rendered":"<p>\n\tAs shown schematically in the graph, high-temperature hardness is made possible only by a very important straightening mechanism: secondary hardening, promoted by the precipitation of fine alloy carbides. The stronger the secondary hardening (meaning more intense carbide precipitation), the higher the tempering resistance of hot-work tool steels. Such precipitation intensity depends on the amount of alloy elements in solid solution, which is related to the alloy composition and heat treating practice obtained by molybdenum, vanadium, or tungsten alloying.&nbsp;<\/p>\n<p>\n\tThe graph shows a schematic of hardness after tempering and the effect of secondary hardening in high-alloy steels. Observe that high-temperature hardness is only possible through precipitation hardening caused by alloy carbides (secondary hardening). At low temperatures, hardness is less than martensite due to the presence of retained austenite, which is eliminated after high-temperature tempering.<\/p>\n<h4 style=\"margin: 12pt 0in 3pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;\">\n\t<span style=\"font-size: 9.5pt; line-height: 115%; font-family: Verdana, sans-serif; font-weight: normal;\"><o:p><\/o:p><\/span><\/h4>\n<p>\n\tVolume 4D, <em>Heat Treating of Irons and Steels<\/em>&nbsp;? Tool Steels ?&nbsp;Heat Treating of Hot-Work Tool Steels ?&nbsp;Introduction&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>As shown schematically in the graph, high-temperature hardness is made possible only by a very important straightening mechanism: secondary hardening, promoted by the precipitation of fine alloy carbides.<\/p>\n","protected":false},"author":63082,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[439,485,454,440,441,482,487,486,1],"tags":[],"class_list":["post-8908","post","type-post","status-publish","format-standard","hentry","category-general","category-hardness-and-hardenability","category-metals-and-alloys","category-news","category-news-articles","category-problems-and-troubleshooting","category-process-and-quality-control","category-tempering","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>One Minute Mentor: Secondary Hardening in Tool Steels - Heat Treating Society<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.asminternational.org\/hts\/results\/-\/journal_content\/56\/10192\/26120368\/NEWS\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"One Minute Mentor: Secondary Hardening in Tool Steels - Heat Treating Society\" \/>\n<meta property=\"og:description\" content=\"As shown schematically in the graph, high-temperature hardness is made possible only by a very important straightening mechanism: secondary hardening, promoted by the precipitation of fine alloy carbides.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.asminternational.org\/hts\/results\/-\/journal_content\/56\/10192\/26120368\/NEWS\/\" \/>\n<meta property=\"og:site_name\" content=\"Heat Treating Society\" \/>\n<meta property=\"article:published_time\" content=\"2016-01-22T16:44:38+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-02-07T04:49:27+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.asminternational.org\\\/hts\\\/results\\\/-\\\/journal_content\\\/56\\\/10192\\\/26120368\\\/NEWS\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.asminternational.org\\\/hts\\\/results\\\/-\\\/journal_content\\\/56\\\/10192\\\/26120368\\\/NEWS\\\/\"},\"author\":{\"name\":\"\",\"@id\":\"\"},\"headline\":\"One Minute Mentor: Secondary Hardening in Tool Steels\",\"datePublished\":\"2016-01-22T16:44:38+00:00\",\"dateModified\":\"2023-02-07T04:49:27+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.asminternational.org\\\/hts\\\/results\\\/-\\\/journal_content\\\/56\\\/10192\\\/26120368\\\/NEWS\\\/\"},\"wordCount\":163,\"publisher\":{\"@id\":\"https:\\\/\\\/www.asminternational.org\\\/hts\\\/#organization\"},\"articleSection\":[\"general\",\"Hardness and Hardenability\",\"Metals and Alloys\",\"news\",\"News Articles\",\"Problems and Troubleshooting\",\"Process and Quality Control\",\"Tempering\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.asminternational.org\\\/hts\\\/results\\\/-\\\/journal_content\\\/56\\\/10192\\\/26120368\\\/NEWS\\\/\",\"url\":\"https:\\\/\\\/www.asminternational.org\\\/hts\\\/results\\\/-\\\/journal_content\\\/56\\\/10192\\\/26120368\\\/NEWS\\\/\",\"name\":\"One Minute Mentor: Secondary Hardening in Tool Steels - 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