The evolution of the deformation-induced martensite in the drawn 316L stainless steel and its effect on mechanical performance are examined. Both the yield strength and ultimate tensile strength of the 316L wire reach over 2.3 GPa at a drawing strain of 3.44. The deformation production of the wire during the drawing process is dislocation, twin and finally, deformation-induced α′-martensite. The neighbouring misorientation between α′-martensite shows a preferential distribution around 60° due to variant selection limited by a double K–S orientation relationship. This preferential misorientation distribution around ∼60° is stable during the drawing process, and the α′-martensite has been refined to possess an average boundary spacing of ∼50 nm at a strain of 3.44.

中文翻译：

---

316L不锈钢拉拔过程中特定角度晶界纳米马氏体晶粒的形成

研究了拉拔 316L 不锈钢中形变诱导马氏体的演变及其对机械性能的影响。在3.44的拉拔应变下，316L线材的屈服强度和极限拉伸强度均达到2.3 GPa以上。线材在拉拔过程中产生的变形是位错、孪晶，最后是变形诱发的α'马氏体。由于受双 K-S 取向关系限制的变体选择，α′-马氏体之间的相邻取向错误显示出 60° 左右的优先分布。这种约 60° 左右的优先取向差分布在拉拔过程中是稳定的，并且 α'-马氏体已被细化，在 3.44 的应变下具有约 50 nm 的平均晶界间距。