Transactions of Materials and Heat Treatment

Title：Comparison of numerical simulation between hot isostatic pressing and warm compaction on Ti-6Al-4V

Authors： YAO Song LANG Li-hui BU Guo-liang ZHANG Dong-xing WANG Gang

Unit： Beihang University

KeyWords： titanium alloy hot isostatic pressing warm compaction numerical simulation

ClassificationCode：TG394

year,vol(issue):pagenumber：2013,38(3):156-160

Abstract：

Taking the processing of a typical cylindrical part as a sample, the forming characteristics during the process of hot isostatic pressing (HIP) and warm compaction about titanium powder material were investigated. Shima model of MSC. MARC software was used to simulate the two different processes, in which the material model of Ti-6Al-4V was inserted. By analyzing the movement and density distribution of the powder with two different methods, it is concluded that HIP's process can be divided into several main steps: first expansion, then followed by striction, and finally densification with uniform distribution. By comparison, in terms of warm compaction, powder material shrinks in the direction of the punch, resulting in an obvious phenomenon of gradients, therefore densification could be unrealizable at average pressure. Through analyzing the forming characteristics during these two techniques comparatively, the powder deformation mechanism during the forming process can be predicted accurately, and it will be helpful to make an option on a suitable forming method.

Funds：

国家科技重大专项资助项目（2009ZX04005-41）

Reference：

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