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材料工程  2018, Vol. 46 Issue (2): 34-40    DOI: 10.11868/j.issn.1001-4381.2017.000179
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
双相不锈钢中奥氏体沉淀相的晶粒取向及界面特征分布
许婷1, 方晓英1, 朱言利1, 王铭1, 尹文红1, 郭红2
1. 山东理工大学 机械工程学院, 山东 淄博 255000;
2. 山东理工大学 分析测试中心, 山东 淄博 255000
Grain Orientation and Interface Character Distribution During Austenite Precipitation Phase in Duplex Stainless Steel
XU Ting1, FANG Xiao-ying1, ZHU Yan-li1, WANG Ming1, YIN Wen-hong1, GUO Hong2
1. School of Mechanical Engineering, Shandong University of Technology, Zibo 255000, Shandong, China;
2. Center of Testing and Analysis, Shandong University of Technology, Zibo 255000, Shandong, China
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摘要 利用电子背散射衍射(EBSD)技术和基于Rodrigues-Frank(R-F)空间的取向差分析方法研究双相不锈钢中过饱和铁素体(α)经1323K沉淀析出的奥氏体(γ)相的晶粒取向和界面(晶界和相界)特征分布。结果表明:α晶粒经ε=2预先轧制变形后,γ析出相具有较强的织构,晶粒内取向差呈现以小角度晶界为主,孪晶界次之的晶界特征分布,这些晶粒与α基体的取向关系满足K-S,N-W和Bain关系的数量基本相当。具有相同取向而未经轧制变形的α晶粒沉淀析出的γ晶粒取向基本随机分布,与基体的取向关系主要以K-S为主;但内部发生孪晶的γ晶粒与基体不再满足K-S关系,其周围的相界约有1/4满足35°/〈110〉的新型取向关系。
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许婷
方晓英
朱言利
王铭
尹文红
郭红
关键词 晶粒取向界面特征分布沉淀析出双相不锈钢    
Abstract:The grain orientation and the interface character distribution were investigated for γ precipitation from the supersaturated α during aging at 1323K in duplex stainless steel by using EBSD technique and misorientation analysis based on Rodrigues-Frank (R-F) space. The results show that sharp texture and the grain boundary character distribution featured by a high population of low angle grain boundary (LAB) and a small number of twin boundaries (TBs) are produced in the γ precipitated from cold-rolled supersaturated coarse α with pre-strain of ε=2. The precipitated γ grains approximately possess K-S, N-W and Bain orientation relationship with the α matrix equally. For the unstrained α matrix of the same orientation, nearly random texture and the grain boundary character predominated by TBs are introduced in the γ precipitation after aging. Most of γ have K-S relation with the α matrix. However, twining in γ leads to the deviation from typical K-S orientation relationship. And also, one-fourth of phase boundaries along γ grains containing twins are found to obey a new orientation relationship of 35°/〈110〉 with α matrix.
Key wordsgrain orientation    interface character distribution    precipitation    duplex stainless steel
收稿日期: 2017-02-22      出版日期: 2018-02-01
中图分类号:  TG142  
通讯作者: 方晓英(1971-),女,博士,教授,主要从事金属材料界面工程研究,联系地址:山东省淄博市张店区新村西路266号山东理工大学机械工程学院(255000),fxy@sdut.edu.cn     E-mail: fxy@sdut.edu.cn
引用本文:   
许婷, 方晓英, 朱言利, 王铭, 尹文红, 郭红. 双相不锈钢中奥氏体沉淀相的晶粒取向及界面特征分布[J]. 材料工程, 2018, 46(2): 34-40.
XU Ting, FANG Xiao-ying, ZHU Yan-li, WANG Ming, YIN Wen-hong, GUO Hong. Grain Orientation and Interface Character Distribution During Austenite Precipitation Phase in Duplex Stainless Steel. Journal of Materials Engineering, 2018, 46(2): 34-40.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2017.000179      或      http://jme.biam.ac.cn/CN/Y2018/V46/I2/34
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