中国物理B ›› 2017, Vol. 26 ›› Issue (3): 38101-038101.doi: 10.1088/1674-1056/26/3/038101

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Cyclic stress induced phase transformation insuper-bainitic microstructure

Wencui Xiu(修文翠), Ying Han(韩英), Cheng Liu(刘澄), Hua Wu(吴化), Yunxu Liu(刘云旭)   

  1. 1 Key Laboratory of Advanced Structural Materials, Ministry of Education, Changchun University of Technology, Changchun 130012, China;
    2 School of Mechanical Engineering, Jilin Agricultural Science and Technology University, Jilin 132101, China;
    3 College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China
  • 收稿日期:2016-08-08 修回日期:2016-11-22 出版日期:2017-03-05 发布日期:2017-03-05
  • 通讯作者: Ying Han, Hua Wu E-mail:hanying_118@sina.com;wuhua@ccut.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51171030 and 51604034), the Scientific and Technological Planning Project of Jilin Province, China (Grant No. 20150520030JH), and the Scientific and Technological Research Fund of Jilin Provincial Education Department during the Twelfth Five-year Plan Period, China (Grant No. 2015-95).

Cyclic stress induced phase transformation insuper-bainitic microstructure

Wencui Xiu(修文翠)1,2, Ying Han(韩英)1, Cheng Liu(刘澄)3, Hua Wu(吴化)1, Yunxu Liu(刘云旭)1   

  1. 1 Key Laboratory of Advanced Structural Materials, Ministry of Education, Changchun University of Technology, Changchun 130012, China;
    2 School of Mechanical Engineering, Jilin Agricultural Science and Technology University, Jilin 132101, China;
    3 College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China
  • Received:2016-08-08 Revised:2016-11-22 Online:2017-03-05 Published:2017-03-05
  • Contact: Ying Han, Hua Wu E-mail:hanying_118@sina.com;wuhua@ccut.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51171030 and 51604034), the Scientific and Technological Planning Project of Jilin Province, China (Grant No. 20150520030JH), and the Scientific and Technological Research Fund of Jilin Provincial Education Department during the Twelfth Five-year Plan Period, China (Grant No. 2015-95).

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摘要： The effects of cyclic stress loading on the microstructual evolution and tensile properties of a medium-carbon super-bainitic steel were investigated. Experimental results show that the cyclic stress can induce the carbon gathering in austenite and phase transformation from film-like retained austenite to twin martensite, which will obviously enhance the tensile strength and the product of tensile strength and ductility. The higher the bainitic transformation temperature, the lower the transformation rate of the retained austenite. The amount and thickness of the film-like retained austenite play an important role during the cyclic stress induced phase transformation.

关键词: super-bainite, cyclic stress, retained austenite, phase transformation

Abstract: The effects of cyclic stress loading on the microstructual evolution and tensile properties of a medium-carbon super-bainitic steel were investigated. Experimental results show that the cyclic stress can induce the carbon gathering in austenite and phase transformation from film-like retained austenite to twin martensite, which will obviously enhance the tensile strength and the product of tensile strength and ductility. The higher the bainitic transformation temperature, the lower the transformation rate of the retained austenite. The amount and thickness of the film-like retained austenite play an important role during the cyclic stress induced phase transformation.

Key words: super-bainite, cyclic stress, retained austenite, phase transformation

中图分类号:  (Metals, semimetals, and alloys)

  • 81.05.Bx
62.20.-x (Mechanical properties of solids) 81.30.-t (Phase diagrams and microstructures developed by solidification and solid-solid phase transformations)