Effect of Heat Treatment on Microstructure and Mechanical Properties of Titanium Recycled by Severe Plastic Deformation

摘要：

Commercially pure (CP) Ti and Ti-6Al-4V machining chips,recycled into fully dense bulk material by a solid-state process based on equal channel angular pressing (ECAP),have been heat-treated and their microstructure and mechanical properties investigated. The as-recycled micro-structure consisted of an ultrafine grain structure and a series of oxide layers associated with the boundary of each machining chip. Following heat treatment within the range 700 to 1000℃ for between 1 and 20 hours, the grain structure coarsened and the oxide was observed to dissolve into Ti solid solution. The solid-state dissolution of Ti oxide is discussed,and the mechanical properties of the heat-treated material are compared to the as-recycled and conventionally extruded materials.

关键词： Titanium machining chips recycling severe plastic deformation ECAP heat treatment

作者: D. T. McDonald A. J. Davies P. Luo S. M. Zhu S. Palanisamy M. S. Dargusch K. Xia

作者单位: Department of Mechanical Engineering and Defence Materials Technology Centre,University of Melbourne Department of Materials Engineering and CAST Co-operative Research Centre,Monash University,VIC 3800 School of Mechanical and Mining Engineering and Defence Materials Technology Centre,University of Qu

会议类型: 国际会议

会议名称: The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)

会议地点: 北京

会议语种:英文

页码: 497-501

在线出版日期: 2011-06-19（万方平台首次上网日期，不代表论文的发表时间）