{"id":8592,"date":"2017-05-12T17:27:48","date_gmt":"2017-05-12T17:27:48","guid":{"rendered":"https:\/\/staging.asminternational.org\/hts3-new\/results\/-\/journal_content\/56\/10192\/27373437\/NEWS\/"},"modified":"2023-02-07T04:49:02","modified_gmt":"2023-02-07T04:49:02","slug":"one-minute-mentor-solubility-of-nitrogen-in-expanded-austenite","status":"publish","type":"post","link":"https:\/\/www.asminternational.org\/ims-new\/results\/-\/journal_content\/56\/10192\/27373437\/NEWS\/","title":{"rendered":"One Minute Mentor: Solubility of Nitrogen in Expanded Austenite"},"content":{"rendered":"<p>\n\tThe graph shows the solubility of nitrogen in expanded austenite (?<sub>N<\/sub>) as a function of the imposed nitrogen activity (<em>a<\/em><sub>N<\/sub>) in a gas mixture of NH<sub>3<\/sub>&nbsp;and H<sub>2<\/sub>&nbsp;for the stainless steels and temperatures indicated in the legend.<\/p>\n<p>\n\tFully nitrided and denitrided conditions are indicated by&nbsp;<em>a<\/em><sub>N<\/sub>&nbsp;= ? and&nbsp;<em>a<\/em><sub>N<\/sub>&nbsp;= 0, respectively. The master curve can be applied for estimating the surface content of nitrogen for a gas mixture of known nitrogen activity <em>a<\/em><sub>N <\/sub>= <em>K<\/em>(<em>T<\/em>) \u00b7 <em>K<\/em>, with <em>K<\/em>(<em>T<\/em>) the temperature-dependent equilibrium constant of ammonia dissociation.<\/p>\n<p>\n\tVolume 4D, <em>Heat Treating of Irons and Steels<\/em>&nbsp;? Heat Treated High-Alloy Steels ?&nbsp;Low-Temperature Surface Hardening of Stainless Steel ?&nbsp;Physical Metallurgy of Expanded Austenite<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The graph shows the solubility of nitrogen in expanded austenite (?N) as a function of the imposed nitrogen activity (aN) in a gas mixture of NH3 and H2 for the stainless steels and temperatures indicated in the legend.<\/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":[439,440,441,493,1],"tags":[],"class_list":["post-8592","post","type-post","status-publish","format-standard","hentry","category-general","category-news","category-news-articles","category-surface-hardening","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: Solubility of Nitrogen in Expanded Austenite - International Metallographic Society - New<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"One Minute Mentor: Solubility of Nitrogen in Expanded Austenite - International Metallographic Society - New\" \/>\n<meta property=\"og:description\" content=\"The graph shows the solubility of nitrogen in expanded austenite (?N) as a function of the imposed nitrogen activity (aN) in a gas mixture of NH3 and H2 for the stainless steels and temperatures indicated in the legend.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.asminternational.org\/ims-new\/results\/-\/journal_content\/56\/10192\/27373437\/NEWS\/\" \/>\n<meta property=\"og:site_name\" content=\"International Metallographic Society - New\" \/>\n<meta property=\"article:published_time\" content=\"2017-05-12T17:27:48+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-02-07T04:49:02+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\\\/ims-new\\\/results\\\/-\\\/journal_content\\\/56\\\/10192\\\/27373437\\\/NEWS\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.asminternational.org\\\/ims-new\\\/results\\\/-\\\/journal_content\\\/56\\\/10192\\\/27373437\\\/NEWS\\\/\"},\"author\":{\"name\":\"\",\"@id\":\"\"},\"headline\":\"One Minute Mentor: Solubility of Nitrogen in Expanded Austenite\",\"datePublished\":\"2017-05-12T17:27:48+00:00\",\"dateModified\":\"2023-02-07T04:49:02+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.asminternational.org\\\/ims-new\\\/results\\\/-\\\/journal_content\\\/56\\\/10192\\\/27373437\\\/NEWS\\\/\"},\"wordCount\":130,\"articleSection\":[\"general\",\"news\",\"News Articles\",\"Surface Hardening\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.asminternational.org\\\/ims-new\\\/results\\\/-\\\/journal_content\\\/56\\\/10192\\\/27373437\\\/NEWS\\\/\",\"url\":\"https:\\\/\\\/www.asminternational.org\\\/ims-new\\\/results\\\/-\\\/journal_content\\\/56\\\/10192\\\/27373437\\\/NEWS\\\/\",\"name\":\"One Minute Mentor: Solubility of Nitrogen in Expanded Austenite - 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