In situ high-energy X-ray diffraction mapping of Lüders band propagation in medium-Mn transformation-induced plasticity steels

Minghe Zhang; Runguang Li; Jie Ding; Haiyang Chen; Jun-Sang Park; Jonathan Almer; Yan-Dong Wang

doi:10.1080/21663831.2018.1530698

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In situ high-energy X-ray diffraction mapping of Lüders band propagation in medium-Mn transformation-induced plasticity steels

Original Report | 更新时间：2026-08-19

- In situ high-energy X-ray diffraction mapping of Lüders band propagation in medium-Mn transformation-induced plasticity steels
- Materials Research Letters Vol. 6, Issue 12, Pages: 662-667(2018)
- 作者机构：
  
  1. Beijing Advanced Innovation Center for Materials Genome Engineering State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing
  2. ray Science Division Advanced Photon Source Argonne National Laboratory Argonne,X
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2018.1530698
  CLC：
- Online First：15 October 2018，
  
  Published：2018
- 稿件说明：
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Minghe Zhang, Runguang Li, Jie Ding, et al. In situ high-energy X-ray diffraction mapping of Lüders band propagation in medium-Mn transformation-induced plasticity steels[J]. Materials Research Letters, 2018, 6(12): 662-667.
DOI：

Minghe Zhang, Runguang Li, Jie Ding, et al. In situ high-energy X-ray diffraction mapping of Lüders band propagation in medium-Mn transformation-induced plasticity steels[J]. Materials Research Letters, 2018, 6(12): 662-667. DOI： 10.1080/21663831.2018.1530698.

摘要

Abstract

BSTRACTTwo-dimensional distributions of microstructural characteristics of austenite (

) around the Lüders band in medium-Mn transformation-induced plasticity (TRIP) steel were revealed by in situ high-energy X-ray diffraction. Lüders band propagation leads to significant changes in the volume fraction and lattice strains of austenite. The evolution of the lattice strain of

-311 accords well with the true yield behavior model and is used to estimate the angle of the Lüders band front with respect to the tensile axis. The modified Williamson-Hall analysis shows that the dislocation density in austenite increased from 7 × 10

−2

to 1.5 × 10

−2

after Lüders band propagation.

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