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

超细晶亚稳奥氏体钢类聚合物变形行为的研究

• 批准号: 22K14509
• 负责人: 高 斯
• 金额: $ 2.91万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Early-Career Scientists
• 财政年份: 2022
• 资助国家: 日本
• 起止时间: 2022-04-01 至 2025-03-31
• 项目状态: 未结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22K14509/
• 关键词: deformation behavior; ultrafine grain; steel; martensitic; martensite

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.

2022学年的研究活动和研究成果如下：（1）在日本JPARC BL 19-TAKUMI对UFG 304不锈钢进行了拉伸变形原位中子衍射实验。用中子衍射技术定量地研究了Luders带扩展过程中形变诱发马氏体的转变速率和奥氏体基体与马氏体之间的相应力分配。（2）上述结果已被总结成一篇短文提交给Scripta Materialia杂志，目前正在审查中。(3)An在2022年5月29日至6月1日在日本筑波举行的国际会议“第七届先进钢国际会议（ICAS）”上进行了口头报告。

项目成果

Effect of grain size on the tensile properties of 304 stainless steel studied by in situ neutron diffraction

原位中子衍射研究晶粒尺寸对304不锈钢拉伸性能的影响

• 发表时间: 2022
• 作者: Si Gao;Wenqi Mao;Wu Gong;Akinobu Shibata;Nobuhiro Tsuji
• 通讯作者: Nobuhiro Tsuji