上海交通大学学报

上海交通大学学报（自然版）

• 金属学与金属工艺 • 上一篇    下一篇

等通道转角挤压对铝青铜力学性能的影响

高万茹，程先华
  

  1. (上海交通大学 机械与动力工程学院， 上海 200240)
  • 收稿日期:2010-04-07 修回日期:1900-01-01 出版日期:2011-01-27 发布日期:2011-01-27

Effect of Mechanical Properties of Cu10%Al4%Fe Alloy Prepared by Equal Channel Angular Extrusion

GAO Wanru，CHENG Xianhua
  

  1. (School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2010-04-07 Revised:1900-01-01 Online:2011-01-27 Published:2011-01-27

摘要： 采用等通道转角挤压（ECAE）工艺对铝青铜(Cu10%Al4%Fe)进行热处理，研究了ECAE处理工艺中预热温度、挤压道次及退火处理对铝青铜外观形貌、微观组织及力学性能的影响.结果表明:在650 °C的预热温度下，铝青铜可以顺利通过ECAE挤压通道；随着ECAE挤压道次从1增至4，铝青铜的显微硬度、屈服强度及延伸率显著增加；经500 °C退火60 min处理后，铝青铜的力学性能最佳.

关键词: 铝青铜, 等通道转角挤压, 热处理, 微观组织, 力学性能

Abstract: Aluminum bronze alloy (Cu10%Al4%Fe) was fabricated by equal channel angular extrusion (ECAE) process. The effects of preheating temperature, extrusion numbers and annealing treatment on the surface appearance, microstructure and mechanical properties of the aluminum bronze alloy were investigated. The results show that the appropriate preheating temperature is 650 °C. When the ECAE pass number increases from 1 to 4, the hardness, yield strength and the plastic properties increase gradually. The alloy has the best mechanical properties after 60 min’s annealing treatment at 500 °C.

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