Effect of annealing processing on microstructure and properties of Ti-6Al-4V alloy by powd

Effect of annealing processing on microstructure and properties of Ti-6Al-4V alloy by powder

injection molding

作者：GUO Shi-bo;QU Xuan-hui;XIANG Jun-huai;ZHANG Rong-fa;HE Xiang-ming;LI Ming-sheng;DUO Shu-wang;LI Wen-kui

作者机构：Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China;School of Materials Science and Engineering,University of Science and Technology of Beijing, Beijing 100083, China;School of Materials Science and Engineering,University of Science and Technology of Beijing, Beijing 100083, China;Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China;Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China;Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China;Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China;Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China;Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China 来源：中国有色金属学报（英文版） ISSN：1003-6326 年：2006 卷：016

期：0z1 页码：701-704 页数：4 中图分类：TG1 正文语种：chi

关键词：Ti6Al4V alloy;metal injection

molding;annealing;microstructure;mechanical properties

摘要：Ti6Al4V alloy parts were prepared by metal injection molding. Brown parts were densified at 1 200-1 260℃ for 2-4 h in vacuum atmosphere. The as-sintered specimens were treated through Hot-Isostatic Pressure(HIP) at 960 ℃ and 140 MPa. Ti6Al4V alloy compacts were annealed at 720-760 ℃ for 1 h. The results show that binder in the parts can be removed by solvent debinding and thermal debinding process. Ti6Al4V alloy has an uniform duplex microstructure with many equiaxed α grains and a little βgrains. When the annealing temperature is higher than 800 ℃,Ti6Al4V alloy has lower mechanical

properties.After solution treatment and aging,a typical martensite microstructure can be achieved.