摘要
采用松装熔渗的方法获得了大长径比WCu合金坯材,并通过旋锻将其加工成直径4mm的线材。运用电子扫描、X射线衍射等手段分析研究了不同温度、不同变形量WCu合金线材的显微组织和物理性能,结果表明:采用热旋锻技术可以制备钨铜假合金线材,其最佳的旋锻工艺是坯材旋锻初始温度为700～750℃,坯材变形量在达到25%之前,每组锻模的加工量为0.4mm;变形量超过25%之后,每组锻模的加工量为0.3mm。利用旋锻工艺可制备出直径为4mm、长度为800mm、相对密度为98.16%、硬度为252HV、电导率为39.2%IACS,组织均匀、表面光洁的WCu25合金线材。
The WCu alloy blank with large ratio of length to diameter was prepared by apparent infiltration technology and the WCu alloy wire of diameter 4mm was fabricated by awaging process.The microstructure and physical properties of WCu alloy wire under different temperature and deformation conditions were analysed by electron scanning and X-ray differaction methods.The result show that WCu pseudo alloy wire can be prepared by swaging technology.The optimal process parameter is initial temperature of 700～750℃.Before the deformation of blank reaches 25%,the processing capacity is 0.4mm.After the 25%,the processing capacity is 0.3mm.The WCu alloy wire with diameter of 4mm,length of 800mm,relative density of 98.16%,hardness of 252HV,electrical conductibility of 39.2% IACS,homogeneous microstructure,and clean surface was produced.
出处
《粉末冶金技术》
CAS
CSCD
北大核心
2011年第1期13-20,共8页
Powder Metallurgy Technology
基金
陕西省教育厅自然科学基金项目(08JK367)
关键词
WCu合金
线材
旋锻
断裂特性
WCu alloy
wire
swaging process
fracture property
