• CN:11-2187/TH
  • ISSN:0577-6686

›› 2005, Vol. 41 ›› Issue (5): 147-153.

• 论文 • 上一篇    下一篇

锰和硅添加对重度冷轧及退火后珠光体钢力学性能的影响

孙淑华;张振戎;熊毅;吕知清;厉勇;傅万堂;牧正志   

  1. 燕山大学亚稳材料制备技术与科学重点实验室;京都大学工学部材料工学研究科
  • 发布日期:2005-05-15

INFLUENCE OF Mn AND Si ON MECHANICAL PROPERTIES OF PEARLITIC STEELS AFTER SEVERELY COLD ROLLING AND ANNEALING

Sun Shuhua;Zhang Zhenrong;Xiong Yi;Lü Zhiqing;Li Yong;Fu Wantang;Maki Tadashi   

  1. Key Laboratory of Metastable Materials Science and Technology, Yanshan University Department of Materials Science and Engineering, Kyoto University
  • Published:2005-05-15

摘要: 研究了几种锰、硅含量的Fe-0.8C合金在重度冷轧及退火后珠光体的显微组织变化及拉伸性能。结果表明,锰、硅的添加可使90%冷轧及450~650 ℃退火后共析珠光体的抗拉强度与屈服点均大幅度提高,但它们对冷轧珠光体延性的影响却是可以忽略的;与锰相比,硅的添加对冷轧及退火后珠光体钢延性的提高更有效,尤其当钢的强度较高时;锰、硅复合添加对重度冷轧及退火珠光体钢力学性能的提高也同样非常有效;经重度冷轧及低温(450 ℃)短时间退火,含硅或锰钢的抗拉强度和屈服点与冷轧态试样相比几乎没有下降,但其延性却明显提高;以硅、锰合金化的共析珠光体钢经90%冷轧及在450 ℃退火30~120 s后强度-延性平衡达到最佳。

关键词: 超细晶, 合金元素, 冷轧, 力学性能, 退火, 珠光体

Abstract: The influence of Mn and Si on mechanical properties of severely cold-rolled and annealed pearlite in Fe-0.8C alloys with various contents are investigated. With the addition of Mn and Si, the tensile strength (sb) and yield strength (ss) of the cold-rolled and annealed pearlite are vastly improved, but its effect on ductility of the cold-rolled pearlite is negligible. The addition of Si is quite effective in improving the ductility of the cold-rolled and annealed pearlite, especially when the strength is at a higher level, I.e., lower annealing temperature or shorter annealing period. The optimal mechanical properties in the alloys with Mn or Si were developed after annealing at 450 ℃ for short annealing periods (30 s to 120 s). The combined addition of Mn and Si is more effective in improving the mechanical properties of severely cold-rolled and annealed pearlite.

Key words: Alloying element, Annealing, Cold rolling, Mechanical property, Pearlite, Ultra-fine grains

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