Annealing treatment induced ε martensite formation and evolution in TWIP steel

Annealing treatment induced ε martensite formation and evolution in TWIP steel
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退火处理诱导 TWIP 钢中 δ 马氏体的形成和演化

DOI:
10.1016/j.matlet.2021.131110
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发表时间:
2021-10
期刊:
影响因子:
3
通讯作者:
J X Li
J X Li
中科院分区:
材料科学3区
文献类型:
--
作者:
H Fu;Y Yan;J L Zhang;J X Li

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用电子背散射衍射和透射电子显微镜对马氏体变体的位向关系进行了晶体学分析。结果表明,短时退火时ε相主要以单一或多个初始变体的形式分布在{1 1 1}γ面上,且与γ面成70.5 °角。重要的是,在长时间退火后,在具有19.5°旋转角的两个初始变体之间的相交处观察到二级变体,其通常被认为难以通过热诱导形成,并且也不是通过用于FCC到HCP转化的众所周知的简单剪切过程直接从基质衍生的。这些成功地解释了ε变体的显微结构特征及其相互关系。
Crystallographic analyses on the orientation relationships of ε martensite variants were carried out by electron backscatter diffraction and transmission electron microscope in TWIP steel. Results show that the ε phases are mainly distributed in single or multiple initial variants with 70.5° angle on {1 1 1}γplanes during short-time annealing. Importantly, secondary variants, which are generally considered difficult to form by thermal-induced and are also not derived directly from matrix by the well-known simple shear process for the FCC to HCP transformation, were observed at the intersection between two initial variants with 19.5° rotation angle after long-time annealing. These successfully interpret the microstructural features of ε variants and their relationships.
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效果%20of%20硼%20on%20机械%20性能%20of%20a%20热轧%2013%%20Mn%20亚稳态%20奥氏体%20钢
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