快速加热和无包套锻造对Ti-43Al-5V-4Nb合金性能的影响  

Microstructure and Tensile Properties of Ti-43Al-5V-4Nb Alloy Using Rapid Heating and Unjacketed Forging Technique

作　　者：李伟[1,2] 杜宇红[2] 

机构地区：[1]华中科技大学材料科学与工程,湖北武汉430074 [2]鹤壁职业技术学院,河南鹤壁458030

出　　处：《铸造技术》2014年第12期2998-2999,共2页Foundry Technology

摘　　要：通过X射线衍射分析、扫描电镜及拉伸性能测试,研究快速加热和无包套锻造法对Ti-43Al-5V-4Nb金属间化合物的微观结构、成分及拉伸性能的影响规律。结果表明,采用该方法制备的Ti Al合金在1 300℃保温1h后,组织由全片层结构组成,且在常温和高温条件下拉伸性能得到了大幅提高。The microstructure and mechanical properties of Ti-43Al-5V-4Nb intermetallic compound prepared using a new rapid heating and unjacketed forging technique were analyzed through X-ray diffraction, scanning electron microscope and tensile test. The results show that, after heat treatment at 1 300 ℃ for 1 h, the microstructure of forged TiAl alloy consist of fully lamellar structure. Meanwhile, the tensile property of the TiAl alloy is improved at both room and high temperatures.

关 键 词：锻造 热处理 力学性能 

分 类 号：TG146.23[一般工业技术—材料科学与工程]