室温ECAP变形对T250马氏体时效钢组织和性能的影响

谢东 杨西荣 赵西成 席莎

谢东, 杨西荣, 赵西成, 席莎. 室温ECAP变形对T250马氏体时效钢组织和性能的影响[J]. 航空材料学报, 2014, 34(6): 28-32. doi: 10.11868/j.issn.1005-5053.2014.6.003
引用本文: 谢东, 杨西荣, 赵西成, 席莎. 室温ECAP变形对T250马氏体时效钢组织和性能的影响[J]. 航空材料学报, 2014, 34(6): 28-32. doi: 10.11868/j.issn.1005-5053.2014.6.003
XIE Dong, YANG Xi-rong, ZHAO Xi-cheng, XI Sha. Effect of ECAP at Room Temperature on Microstructure and Properties of T250 Maraging Steel[J]. Journal of Aeronautical Materials, 2014, 34(6): 28-32. doi: 10.11868/j.issn.1005-5053.2014.6.003
Citation: XIE Dong, YANG Xi-rong, ZHAO Xi-cheng, XI Sha. Effect of ECAP at Room Temperature on Microstructure and Properties of T250 Maraging Steel[J]. Journal of Aeronautical Materials, 2014, 34(6): 28-32. doi: 10.11868/j.issn.1005-5053.2014.6.003

室温ECAP变形对T250马氏体时效钢组织和性能的影响

doi: 10.11868/j.issn.1005-5053.2014.6.003
基金项目: 

陕西省教育厅专项科研计划项目(12JK0429)

详细信息
    通讯作者:

    谢东(1988—), 男, 硕士研究生, 主要从事T250马氏体时效钢超细化研究, (E-mail)421364467@qq.com

  • 中图分类号: TG142.24;V252.1

Effect of ECAP at Room Temperature on Microstructure and Properties of T250 Maraging Steel

  • 摘要: 研究等径弯曲通道变形(ECAP)过程中T250马氏体时效钢的组织变化规律,以及后续时效处理过程中,时效时间对硬度的影响.采用ECAP工艺对T250马氏体时效钢进行C方式2道次室温变形,并对原始试样和ECAP变形试样进行480℃/(15~480min)的时效处理.结果表明,随着ECAP道次的增加,材料x面的组织由较均匀整齐的板条状马氏体变成弯曲杂乱的马氏体,且在马氏体上出现位错胞和亚晶,y面则是马氏体板条的持续细化,而z面组织变化不明显;T250马氏体时效钢的硬度随道次增加而逐渐升高,而时效处理对T250钢的提升百分比下降,同时达到峰硬度所需的时间缩短.

     

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出版历程
  • 收稿日期:  2014-08-17
  • 修回日期:  2014-09-24
  • 刊出日期:  2014-12-01

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