Properties improvement and microstructure changes during thermomechanical treatment in sintered Cu-Au alloy  

形变热处理对烧结Cu-Au合金性能与微观组织的影响(英文)

作　　者：Ivana MARKOVIC Svetlana NESTOROVIC Desimir MARKOVIC Dragoslav GUSKOVIC 

机构地区：[1]Technical faculty in Bor, University of Belgrade,VJ 12, 19210 Bor, Serbia

出　　处：《Transactions of Nonferrous Metals Society of China》2014年第2期431-440,共10页中国有色金属学报（英文版）

基　　金：Project(TR34003)supported by the Ministry of Education,Science and Technological Development of the Republic of Serbia

摘　　要：The changes in hardness, microhardness, electrical conductivity and microstructure of the sintered Cu-4%Au （mole fraction） alloy during thermomechanical treatment were studied. Following the primary strain hardening, an annealing of rolled alloy in the temperature range of 60-350 ℃ provided additional strengthening due to the anneal hardening effect. An increase in properties took place in two stages, and the best combination of properties was achieved in the alloy pre-rolled with 40% reduction after annealing at 260 ℃. Significant microstructural changes followed the changes of properties in the course of the thermomechanical treatment.研究Cu-4%Au合金的硬度、显微硬度、导电性和微观组织在形变热处理过程中的变化。在加工硬化后,再对轧制合金在60～350°C温度下退火。由于退火硬化效应,合金的强度增大。结果表明:Cu-Au合金性能在两个阶段都得到改善;合金进行变形量为40%的热轧后,在260°C退火能得到最佳的综合性能。合金的微观组织也在形变热处理过程中发生显著变化。

关 键 词：Cu-Au alloys anneal hardening thermomechanical treatment HARDNESS MICROHARDNESS electrical conductivity 

分 类 号：TG166.2[金属学及工艺—热处理]