摘要
固溶态Cu-Cr合金连续挤压后分别进行室温空淬及水淬处理,利用布氏硬度计、导电仪、光学显微镜(OM)和透射电子显微镜(TEM)等测试手段,研究了不同淬火方式对合金组织和性能的影响。结果表明:Cu-Cr合金连续挤压过程中发生形变、回复再结晶和固溶体分解;连续挤压能够大幅提高合金性能,但对冷却速率变化比较敏感,与水淬相比,空淬使时效析出和再结晶得以继续进行,使导电性能进一步提升。
Pre-solution treated Cu-Cr alloy were quenched in air and water at room temperature after continuous extrusion.Effects of different quench modes on microstructure and properties of Cu-Cr alloy under continuous extrusion were studied,the microstructure of the alloy was observed by optical microscope（ OM） and transimission electron microscopy（ TEM）,the properties were tested by brinell hardness and electrical conductivity.The results show that the plastic deformation,recovery,recrystallization and solute separation take place during continuous extrusion.The properties of the Cu-Cr alloy can be greatly improved after continuous extrusion,but the properties is sensitive to cooling rate.Compared with the water quenching,the air quenching can make the aging precipitation and recrystallization continue,and further improve electrical conductivity.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2017年第1期58-63,共6页
Transactions of Materials and Heat Treatment
基金
中国铁路总公司科技研究开发计划课题(2016J006-B)
