An Accurate Method for Crystallographic Reconstruction of Parent Austenite from Inherited Martensite in a Low-Alloy Steel
State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
School of Mechanical Engineering and Automation, Wuhan Textile University, 1 Yangguang Avenue, Wuhan 430073, China
Author to whom correspondence should be addressed.
Received: 22 June 2019 / Revised: 10 July 2019 / Accepted: 13 July 2019 / Published: 15 July 2019
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The microstructure of austenite at high temperatures, which cannot be reserved at room temperatures, determines the properties of its transformed phase in low-alloy steels. Consequently, an accurate method is herein developed to reconstruct local orientations of the parent austenite (
) phase from electron backscatter diffraction maps of the martensite (
) microstructure. The orientation map of
is cropped into a grid of data squares as the reconstruction unit. The cropped square is then divided into the square inherited from only one
grain and the square inherited from more than one
grain. The local orientations around parent
grain boundaries are more accurately determined using a newly proposed reconstruction criterion. Furthermore, the solution spaces for the orientation relationship and the parent
orientation are refined, which simultaneously improves the calculation accuracy and efficiency of reconstruction procedure. The validated reconstruction method is applied to obtain local orientations of the deformed
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Wang, D.; Jin, J.; Li, Q.; Wang, X. An Accurate Method for Crystallographic Reconstruction of Parent Austenite from Inherited Martensite in a Low-Alloy Steel. Crystals 2019, 9, 358.
Wang D, Jin J, Li Q, Wang X. An Accurate Method for Crystallographic Reconstruction of Parent Austenite from Inherited Martensite in a Low-Alloy Steel. Crystals. 2019; 9(7):358.
Wang, Daokuan; Jin, Junsong; Li, Qiaomin; Wang, Xinyun. 2019. "An Accurate Method for Crystallographic Reconstruction of Parent Austenite from Inherited Martensite in a Low-Alloy Steel." Crystals 9, no. 7: 358.
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