Deformation Mechanism and Mechanical Properties of Nano/Ultrafine Grained and Heterogeneous Fe-17Cr-6Ni Austenitic Steel

机译：纳米/超细晶粒和异质Fe-17Cr-6Ni奥氏体钢的变形机理和力学性能

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Deformation behavior and mechanical properties of Fe-17Cr-6Ni austenitic steel with nano/ultrafine grained microstructure and heterogeneous microstructure were studied in this investigation. With decreasing grain size, stacking fault and deformation twining gradually became the unique deformation mechanism in nano/ultrafine grained austenitic steel while in the coarse grained counterpart, deformation induced martensite transformation was always the dominant deformation mechanism. This is due to that with decreasing grain size, the critical stress for nucleating partial dislocations became smaller than that for nucleating perfect dislocations. Besides, the heterogeneous nano/ultrafine grained austenitic steel was found to possess better mechanical properties compared with homogeneous nano/ultrafine grained steel, which can be attributed to high back stress hardening and multi-stage strain hardening.

机译：本研究研究了具有纳米/超细颗粒微观结构和非均相微结构的Fe-17Cr-6Ni奥氏体钢的变形行为和力学性能。随着晶粒尺寸的降低，堆叠故障和变形缠绕逐渐成为纳米/超细颗粒奥氏体钢中的独特变形机制，同时在粗粒对应物中，变形诱导的马氏体转化始终是主导变形机制。这是由于晶粒尺寸减小，核心部分脱位的临界应力比成核的完美脱位的临界应力小。此外，发现与均相纳米/超细粒粒相比具有更好的机械性能的异质纳米/超细颗粒钢，其可归因于高背应力硬化和多级应变硬化。

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《Annual Meeting Exhibition of The Minerals, Metals Materials Society》|2020年|xxviii p.1029-p.2170|共8页
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X. Deng; C. Lei; Z. Wang;
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中图分类 TB3-532;
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Heterogeneous structure; Nano/ultrafine grained structure; Back stress hardening; High strength; High ductility;

机译：异质结构;纳米/超细粒化结构;背部应力硬化;高强度;高延展性;

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1. Deformation mechanism and ductile fracture behavior in high strength high ductility nano/ultrafine grained Fe-17Cr-6Ni austenitic steel [J] . Chengshuai Lei, Xiaolin Li, Xiangtao Deng, Materials Science and Engineering . 2018,第jana2期

机译：高强度高延性纳米/超细晶粒Fe-17Cr-6Ni奥氏体钢的变形机理和延性断裂行为
2. Microstructural Evolution and Microstructure-Mechanical Property Correlation in Nano/ultrafine-Grained Fe-17Cr-6Ni Austenitic Steel [J] . Lei Chengshuai, Li Xiaolin, Deng Xiangtao, Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science . 2018,第12期

机译：纳米/超细晶胞Fe-17Cr-6Ni奥氏体钢中的微结构演化与微观结构 - 机械性能相关性
3. Nano/ultrafine grained austenitic stainless steel through the formation and reversion of deformation-induced martensite: Mechanisms, microstructures, mechanical properties, and TRIP effect [J] . Shirdel M., Mirzadeh H., Parsa M. H. Materials Characterization . 2015,第Null期

机译：纳米/超细晶粒奥氏体不锈钢通过形变诱发马氏体的形成和回复：机理，微观结构，力学性能和TRIP效应
4. Deformation Mechanism and Mechanical Properties of Nano/Ultrafine Grained and Heterogeneous Fe-17Cr-6Ni Austenitic Steel [C] . Xiangtao Deng, Chengshuai Lei, Zhaodong Wang TMS annual meeting exhibition . 2020

机译：纳米/超细晶粒和非均质Fe-17Cr-6Ni奥氏体钢的变形机理和力学性能
5. Static, Cyclic Deformation Responses and Related Micromechanisms of Ni-Carbonyl CVD Material of Bimodal Grain Structures: Columnar Grains with Ultrafine and Nano-Twins and Ultrafine-Grained Matrix [D] . ?Fu, Shaohua 2020

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机译：变形机制对相变诱导纳米奥氏体不锈钢断裂行为的意义
7. Deformation mechanisms and mechanical properties of hot rolled Fe-Mn-C-(Al)-(Si) austenitic steels [O] . Phiu-on Kriangyut 2008

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Deformation Mechanism and Mechanical Properties of Nano/Ultrafine Grained and Heterogeneous Fe-17Cr-6Ni Austenitic Steel

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