Ti-55钛合金超塑性板材的显微组织与力学性能  

Microstructure and properties of superplastic plate of Ti-55 alloy

作　　者：王娟华[1] 王红武[1] 陈志勇[2] 陈永辉[1] 王新[1] 张磊[1] 贺军[1] 田丽[1] 

机构地区：[1]宝鸡钛业股份有限公司,宝鸡721014 [2]中国科学院金属研究所,沈阳110016

出　　处：《中国有色金属学报》2010年第B10期91-93,共3页The Chinese Journal of Nonferrous Metals

摘　　要：将二次真空自耗熔炼的Ti-55钛合金铸锭轧制成1.2mm厚的薄板,研究Ti-55钛合金超塑性板材的显微组织与力学性能。结果表明,显微组织均匀,晶粒极细的Ti-55钛合金超塑性板材,具有良好的室温拉伸性能和超塑性能。超塑性拉伸试验表明,在一定的变形温度范围(880～920℃)与变形速率(1.4×10^(-3)s^(-1))下,Ti-55钛合金板材超塑性伸长率可达到700%以上。The 1.2 mm thick plates of Ti-55 alloy were rolled from ingots melted by twice vacuum arc furnaces. Microstructure and properties of superplastic plate of Ti-55 alloy were studied. The results show that very fine crystalline grain and good room temperature tensile property have obtained through improved rolling processing. With this processing, a total elongation above 700% could be obtained at 880-920 ℃ at strain rate of 1.4× 10^-3 s^-1.

关 键 词：Ti-55钛合金 超塑性 显微组织 力学性能 

分 类 号：TG146.23[一般工业技术—材料科学与工程]