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首页> 外文期刊>Journal of Materials Engineering and Performance >Microstructure and Mechanical Properties of Austenitic Stainless Steels After Cold Rolling
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Microstructure and Mechanical Properties of Austenitic Stainless Steels After Cold Rolling

机译：奥氏体不锈钢冷轧后的组织和力学性能

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摘要

The effect of austenite stability on the evolution of microstructure and mechanical properties of three austenitic stainless steels during cold rolling has been studied. Samples of different grain sizes have been used to characterize the microstructures during deformation. In the case of 304/8 percent Ni and 304/10 percent Ni stainless steels, the transformation microstructures consist of mechanical twins: epsilon-martensite and alpha'-martensite. No hexagonal close-packed (hcp) epsilon-martensite was detected in 316 stainless steel. The volume fraction of alpha'-martensite formed increases with increasing strain in 304 and 316 stainless steels for a given grain size. The amount of alpha' phase increases with a decrease in grain size in 304 stainless steel, while the formation of this phase has been found to be grain size insensitive in 316 stainless steel. The strain-hardening behavior exhibited by the three stainless steels used in this study indicates the contribution of both alpha'-martensite and grain size strengthening in the case of both 304 stainless steels, while only grain size contribution was found in the case of 316 stainless steel.
机译：研究了奥氏体稳定性对三种奥氏体不锈钢冷轧过程中组织演变和力学性能的影响。不同晶粒度的样品已被用来表征变形过程中的微观结构。对于304/8％Ni和304/10％Ni的不锈钢，相变组织由机械孪晶组成：ε-马氏体和α'-马氏体。在316不锈钢中未检测到六方密堆积（hcp）的ε-马氏体。对于给定的晶粒尺寸，在304和316不锈钢中形成的α'-马氏体的体积分数随应变的增加而增加。在304不锈钢中，α'相的含量随晶粒尺寸的减小而增加，而在316不锈钢中，发现该相的形成对晶粒尺寸不敏感。本研究中使用的三种不锈钢表现出的应变硬化行为表明，在两种304不锈钢的情况下，α'-马氏体和晶粒尺寸的增强都有贡献，而在316不锈钢的情况下，只有晶粒尺寸的贡献被发现。钢。

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