High-cycle fatigue behavior of TWIP steel with graded grains: breaking the rule of mixture

C.W. Shao; P. Zhang; X.G. Wang; Q. Wang; Z.F. Zhang

doi:10.1080/21663831.2018.1550822

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High-cycle fatigue behavior of TWIP steel with graded grains: breaking the rule of mixture

Original Report | 更新时间：2026-08-19

- High-cycle fatigue behavior of TWIP steel with graded grains: breaking the rule of mixture
- Materials Research Letters Vol. 7, Issue 1, Pages: 26-32(2019)
- 作者机构：
  
  Materials Fatigue and Fracture Division Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2018.1550822
  CLC：
- Online First：30 November 2018，
  
  Published：2019
- 稿件说明：
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C.W. Shao, P. Zhang, X.G. Wang, et al. High-cycle fatigue behavior of TWIP steel with graded grains: breaking the rule of mixture[J]. Materials Research Letters, 2019, 7(1): 26-32.
DOI：

C.W. Shao, P. Zhang, X.G. Wang, et al. High-cycle fatigue behavior of TWIP steel with graded grains: breaking the rule of mixture[J]. Materials Research Letters, 2019, 7(1): 26-32. DOI： 10.1080/21663831.2018.1550822.

摘要

Abstract

BSTRACTWe report a method

named as T A treatment

to improve the high-cycle fatigue (HCF) property of twinning-induced plasticity (TWIP) steel without sacrificing its ductility and work-hardening ability. A long-range gradient in grain size was obtained in the TWIP steel

whose HCF resistance is better than both coarse-grain and fine-grain steels

breaking the rule of mixture. The surprising HCF property of the graded grain structure is believed to originate from the large generation of geometrically necessary dislocations and the formation of hard core and soft shell construction during cyclic loading.

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