多向锻造及时效对Ti-6Al-4V合金滑动磨损性能的影响  

Effect of Multi-directional Forging and Aging on Sliding Wear Performance of Ti-6Al-4V Titanium Alloy

作　　者：黄彦天 严伟林[2] HUANG Yantian;YAN Weilin(Yinchuan College,China University of Mining and Technology,Yinchuan 750001,China;Key Laboratory of Nonferrous Materials and New Processing Technology of Ministry of Education,School of Resources,Environment and Materials,Guangxi University,Nanning 530004,China)

机构地区：[1]中国矿业大学银川学院,宁夏银川750001 [2]广西大学资源环境和材料学院有色金属及材料加工新技术教育部重点实验室,广西南宁530004

出　　处：《热加工工艺》2022年第1期16-20,24,共6页Hot Working Technology

基　　金：国家自然科学基金资助项目(51561003)。

摘　　要：对Ti-6Al-4V合金进行了复合多向锻造和时效处理,制备了具有强度高且塑性优良的超细晶钛合金材料,以增强超细晶钛合金的耐滑动磨损性能。研究结果表明:经过复合处理后试样晶粒明显细化且超细的第二相微粒呈弥散分布,力学性能显著提高;经过多向锻造并400℃×4h时效处理后,试样的抗拉强度和屈服强度分别从888.00、845.98MPa提高到1091.75、1068.06 MPa,分别提高了22.9%、28.4%,并保持良好的塑性、韧性。这主要是由于试验材料形成了α、β双相与纳米第二相微粒耦合的超细晶组织。The Ti-6Al-4V alloy was processed by compound multi-directional forging and aging treatment. Ultrafine crystalline titanium alloy with high strength and excellent plasticity was prepared to enhance the wear resistance of ultrafine crystalline titanium alloy. The research results show that the sample grains is obviously refined and the ultrafine second phase particles are dispersed after composite processing, and the mechanical properties are significantly improved. After the multi-directional forging and aging treatment at 400℃ for 4h, the tensile strength and the yield strength of the test samples increase from 888.00MPa and 845.98MPa to 1091.75MPa and 1068.06MPa respectively, which increase by 22.9% and 28.4%respectively, and the material maintains good ductility and toughness. This is mainly due to the formation of superfine crystal structure with α and β phases and nano-second phase particles.

关 键 词：TI-6AL-4V钛合金 多向锻造 时效 强度 滑动磨损 

分 类 号：TG316[金属学及工艺—金属压力加工] TG146.23[一般工业技术—材料科学与工程]