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首页> 外文期刊>Materials Science and Engineering >Microstructural investigation on deformation behavior of high purity Fe-Cr-Ni austenitic alloys during tensile testing at different temperatures
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Microstructural investigation on deformation behavior of high purity Fe-Cr-Ni austenitic alloys during tensile testing at different temperatures

机译：高纯Fe-Cr-Ni奥氏体合金在不同温度下拉伸试验过程中变形行为的显微组织研究

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摘要

In this paper, optical and transmission electron microscopy techniques and tensile tests were used to investigate the deformation behavior of high purity Fe-Cr-Ni austenitic alloys during low temperature deformation. Microstructural investigations revealed that deformation-induced martensitic transformations occurs through the steps γ→ε→α′. Remarkably, it was found that the contributions of both stacking fault energy (SFE) and driving force should be considered in explaining the occurrence of deformation-induced α′-martensite, which significantly affects the mechanical behavior of the alloy. Further, the findings confirmed the previous works suggesting that the low SFE of the alloy does not necessarily lead to dislocations planarity.
机译：本文采用光学和透射电子显微镜技术以及拉伸试验研究了高纯度Fe-Cr-Ni奥氏体合金在低温变形过程中的变形行为。显微组织研究表明，变形引起的马氏体相变通过γ→ε→α′步骤发生。值得注意的是，发现在解释由变形引起的α'-马氏体的发生时，应同时考虑堆垛层错能（SFE）和驱动力的贡献，这会显着影响合金的机械性能。此外，该发现证实了先前的工作，表明该合金的低SFE不一定会导致位错平面度。

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