+Advanced Search
Effect of cryogenic treatment prior rolling on microstructure and mechanical properties of AZ31 magnesium alloy
DOI:
Author:
Affiliation:

Heavy Machinery Engineering Research Center of the Ministry of Education,Taiyuan University of Science and Technology,Taiyuan, China,Guangxi Liuzhou Iron and Steel Group Company Limited,Liuzhou,Heavy Machinery Engineering Research Center of the Ministry of Education,Taiyuan University of Science and Technology,Taiyuan, China,Heavy Machinery Engineering Research Center of the Ministry of Education,Taiyuan University of Science and Technology,Taiyuan, China,Heavy Machinery Engineering Research Center of the Ministry of Education,Taiyuan University of Science and Technology,Taiyuan, China,Heavy Machinery Engineering Research Center of the Ministry of Education,Taiyuan University of Science and Technology,Taiyuan, China

Clc Number:

Fund Project:

National Natural Science Foundation of China (NO. 51604181), Coal Based Low Carbon Joint Fund of Shanxi Province(NO.U1510131), the Key Research and Development Program of Shanxi Province (NO. 201603D121010), Applied Basic Research Program of Shanxi Province (NO.201601D021095), Project of University Science and Technology Innovation of Shanxi Province (2015172)

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    The effects of cryogenic treatment prior hot rolling on the strength toughness and ductility of as-cast AZ31 magnesium alloy plate was investigated in this study. The cryogenic treatment conditions were ?60 °C/12 h, ?120 °C/12 h, ?180 °C/12 h, ?60 °C/2 h, and ?180 °C/2 h. Experimental results indicated that appropriate cryogenic treatment conditions can significantly refine the grain size and the strength, toughness and ductility were also improved. A large number of twins appeared in both kinds of samples cryogenically treated for 2 h. The grain size of the sample, which experienced cryogenic treatment for 12 h at ?60 °C followed by rolling process was the finest and most uniform. By increasing cryogenic treatment duration to 12 h, the yield strength of the AZ31 magnesium alloy was enhanced by 25.8% after rolling under ?60 °C cryogenic treatment temperature. Meanwhile, a four-time increase in extension rate (3.06% to 12.31%) was attained. The tensile fracture presented a mixed-mode fracture, which is characteristic of brittle and ductile fracture mechanisms.

    Reference
    Related
    Cited by
Get Citation

[Huang Zhiquan, Wei Jianchun, Huang Qingxue, Ma Lifeng, Gao Xiangyu, Yue Zhaohan. Effect of cryogenic treatment prior rolling on microstructure and mechanical properties of AZ31 magnesium alloy[J]. Rare Metal Materials and Engineering,2018,47(10):2942~2948.]
DOI:[doi]

Copy
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:March 19,2017
  • Revised:July 10,2017
  • Adopted:August 16,2017
  • Online: November 08,2018
  • Published: