Numerical simulation of the effect of initial relative density distribution on densification process of Ti6A14V powder during hot isostatic pressing
MA Lei1,CHE Hong-yan2,3,CAO Rui1,CHEN Jian-hong1
(1. State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metal, Lanzhou University of Technology, Lanzhou 730050, China 2. Advanced Technology & Materials Co., Ltd., Beijing 100081, China 3. Engineering and Technology Research Center of Hot Isostatic Pressing, Zhuozhou 072750, China)
Abstract:To investigate the effect of initial relative density distribution on the densification behavior of titanium alloy powder during hot isostatic pressing (HIP), the finite element software (MSC.Marc) was used to simulate HIP process of Ti6A14V metal powder. The rheological behavior of the powders under different relative density distributions was compared. Meanwhile, the densification mechanism at different stages and the effect of different initial relative density distributions on the final forming of compacts were investigated. The results indicate that the simulated degree of deformation in consideration of the initial relative density inhomogeneous distribution is consistent with the testing results. The maximum relative error for deformation is less than 1.2%. The numerical simulation can predict the HIP process, provide a guidance, and build a basis for optimal design of complex shape containers.
马 雷,车洪艳,曹 睿,陈剑虹. 初始相对密度分布对Ti6A14V粉末热等静压致密化过程影响的数值模拟[J]. , 2018, 28(06): 10-14.
MA Lei,CHE Hong-yan,,CAO Rui,CHEN Jian-hong. Numerical simulation of the effect of initial relative density distribution on densification process of Ti6A14V powder during hot isostatic pressing. , 2018, 28(06): 10-14.
[1] 阮建明, 黄培云.粉末冶金原理[M]. 机械工业出版社, 2012.[2]姜卓钰, 张朋, 包建文, 等.等静压技术在材料加工领域的应用现状[J].宇航材料工艺, 2017, 47(1):13-19[3]Kim K T, Jeon Y C.Densification behavior of 316L stainless steel powder under high temperature[J].Materials Science and Engineering: A, 1998, 245(1):64-71[4]Zhou S, Song B, Xue P, et al.Numerical simulation and experimental investigation on densification,shape deformation,and stress distribution of Ti6Al4V compacts during hot isostatic pressingThe International Journal of Advanced Manufacturing Technology,2016: 1-13.[J].The International Journal of Advanced Manufacturing Technology, 2017, 88(1):19-31[5]Hrairi M, Chtourou H, Gakwaya A, et al.Modeling the powder compaction process using the finite element method and inverse optimization[J].The International Journal of Advanced Manufacturing Technology, 2011, 56(5):631-647[6] 冯超, 孙丹丹, 陈火红.全新Marc实例教程与常见问题解析[M]. 中国水利水电出版社, 2012.[7]Teraoku T.Hot isostatic pressing simulation for titanium alloys[J].International Journal of Powder Metallurgy, 2008, 44(5):57-61[8]Kim K T, Yang H C.Densification behaviour of titanium alloy powder under hot isostatic pressing[J].Powder Metallurgy, 2001, 44(1):41-47[9]Yuan W X, Mei J, Samarov V, et al.Computer modelling and tooling design for near net shaped components using hot isostatic pressing[J].Journal of Materials Processing Technology, 2007, 182(1–3):39-49[10]Xue P J, Wu Y, Wei Q S, et al.Hot Isostatic Pressing of Ti6Al4V Alloys Monolithic Bladed Disks[J].Applied Mechanics & Materials, 2014, 496-500(2):279-283[11]郎利辉, 续秋玉, 张东星, 等.钨合金粉末的热等静压数值模拟及验证粉末冶金材料科学与工程[J].粉末冶金材料科学与工程, 2014, 19(6):839-846[12]Shima S, Oyane M.Plasticity theory for porous metals[J].International Journal of Mechanical Sciences, 1976, 18(6):285-291