材料工程2018，Vol.46Issue(2)：34-40,7.DOI:10.11868/j.issn.1001-4381.2017.000179
双相不锈钢中奥氏体沉淀相的晶粒取向及界面特征分布
Grain Orientation and Interface Character Distribution During Austenite Precipitation Phase in Duplex Stainless Steel
摘要
Abstract
The grain orientation and the interface character distribution were investigated for γprecipi-tation from the supersaturated αduring aging at 1323K in duplex stainless steel by using EBSD tech-nique 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 theγprecipitated 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 αmatrix 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 ma-trix .However ,twining in γ leads to the deviation from typical K-S orientation relationship .And al-so ,one-fourth of phase boundaries along γgrains containing twins are found to obey a new orientation relationship of 35°/〈110〉 with α matrix.关键词
晶粒取向/界面特征分布/沉淀析出/双相不锈钢Key words
grain orientation/interface character distribution/precipitation/duplex stainless steel分类
矿业与冶金引用本文复制引用
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):34-40,7.基金项目
国家自然科学基金项目(51471100,51171095) （51471100,51171095）
