Quantitative Analysis of the Crystallographic Orientation Relationship Between the Martensite and Austenite in Quenching-Partitioning-Tempering Steels
Quantitative Analysis of the Crystallographic Orientation Relationship Between the Martensite and Austenite in Quenching-Partitioning-Tempering Steels
复制标题
淬火-配分-回火钢中马氏体和奥氏体晶体取向关系的定量分析
DOI：
10.1007/s40195-017-0683-3
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
Rong Yong Hua
中科院分区：
文献类型：
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作者：
Zhang Ke;Liu Ping;Li Wei;Ma Feng Cang;Rong Yong Hua
研究了中、低碳钢淬火-配分-回火后马氏体和残余奥氏体间的位向关系。通过选区电子衍射（SAED）确定所研究钢中的OR为K-S或N-W OR。同时，基于Miyamoto提出的电子背散射衍射数据的数值拟合方法，对ORs进行了研究。低折射率方向上的K-S和N-W OR的模拟结果与实验极图并不完全一致，这可能是由于取向偏离理想取向和低折射率方向的高度对称性造成的。然而，模拟结果与实验极图在高折射率方向{123}bcc。在Miyamoto等人工作的基础上提出了一种简单的改进方法。结果表明，用改进方法测定的OR值与Miyamoto法测定的OR值相近，即低碳Q-P-T钢的OR值接近K-S OR值，而中碳Q-P-T钢的OR值随着碳含量的增加而接近N-W OR值。
The orientation relationships (ORs) between the martensite and the retained austenite in low- and medium-carbon steels after quenching–partitioning–tempering process were studied in this work. The ORs in the studied steels are identified by selected-area electron diffraction (SAED) as either K–S or N–W ORs. Meanwhile, the ORs were also studied based on numerical fitting of electron backscatter diffraction data method suggested by Miyamoto. The simulated K–S and N–W ORs in the low-index directions generally do not well coincide with the experimental pole figure, which may be attributed to both the orientation spread from the ideal variant orientations and high symmetry of the low-index directions. However, the simulated results coincide well with experimental pole figures in the high-index directions {123}bcc. A modified method with simplicity based on Miyamoto’s work was proposed. The results indicate that the ORs determined by modified method are similar to those determined by Miyamoto’ method, that is, the OR is near K–S OR for the low-carbon Q–P–T steel, and with the increase of carbon content, the OR is closer to N–W OR in medium-carbon Q–P–T steel.