Kinetics analysis of two-stage austenitization in supermartensitic stainless steel

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• 作者：Frank Niessen^a ; ^{frannie@dtu.dk} ; Matteo Villa^b ; ^{matv@mek.dtu.dk} ; John Hald^b ; ^{jhald@mek.dtu.dk} ; Marcel A.J. Somers^b ; ^{somers@mek.dtu.dk}
• 关键词：Supermartensitic stainless steels ; Phase transformation kinetics ; Interface diffusion ; Synchrotron radiation ; Kinetics modeling ; Reversed austenite
• 刊名：Materials & Design
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：116
• 期：Complete
• 页码：8-15
• 全文大小：1164 K
• 卷排序：116

文摘

Austenitization in X4CrNiMo16-5-1 supermartensitic stainless steel occurs in two distinct stages. Two-stage austenitization kinetics can be predicted by using kinetics modeling. The rate of the first stage of austenitization is determined by Ni-diffusion in the body-centered-cubic martensite lattice. The rate of the second stage of austenitization is determined by Ni-diffusion in the face-centered-cubic austenite lattice.