Investigation on the polymer-like deformation behavior in ultra-fine grained metastable austenitic steel

研究活动及研究成果如下：(1)在日本JPARC BL19-TAKUMI对UFG 304不锈钢进行了原位中子衍射拉伸变形实验。利用中子衍射技术定量评价了形变诱发马氏体的相变速率以及奥氏体基体与马氏体之间的相应力分配。(2)以上结果总结成一篇短文提交给Scripta Materialia杂志，目前正在审稿中。(3)于2022年5月29日至6月1日在日本筑波举行的“第七届先进钢国际会议（ICAS）”国际会议上作了口头报告。

Research activities and research achievements in the academic year 2022 are as follows:(1)Tensile deformation with in-situ neutron diffraction experiments were performed on the UFG 304 stainless steel at BL19-TAKUMI, JPARC, Japan. The transformation rate of deformation induced martensite and the phase stress partitioning between austenite matrix and martensite during the propagation of the huge Luders band were quantitatively evaluated by the neutron diffraction technique.(2)Above results were summarized into a short paper submitted to the journal Scripta Materialia and now it is under review.(3)An oral presentation was given in the international conference “The 7th International Conference on Advanced Steels (ICAS)” held on May 29 - June 1, 2022 Tsukuba, Japan.