CAJ | 학술논문

采用热等静压工艺制备 Ti-6Al-4V 和 Ti-60两种预合金粉末钛合金，研究两种不同包套形式对粉末合金拉伸性能的影响，采用SEM观察粉末合金的拉伸断口形貌，并利用MSC.Marc有限元分析软件对两种包套在热等静压过程中包套各部位的尺寸收缩进行模拟预测。结果表明：包套结构设计不合理时，焊缝在热等静压过程中存在泄漏的风险，进而会严重恶化粉末合金的性能；有限元模拟仿真可以辅助包套设计，提高效率，对制备粉末冶金近净成型构件有较为重要的工程应用意义。
채용열등정압공예제비 Ti-6Al-4V 화 Ti-60량충예합금분말태합금，연구량충불동포투형식대분말합금랍신성능적영향，채용SEM관찰분말합금적랍신단구형모，병이용MSC.Marc유한원분석연건대량충포투재열등정압과정중포투각부위적척촌수축진행모의예측。결과표명：포투결구설계불합리시，한봉재열등정압과정중존재설루적풍험，진이회엄중악화분말합금적성능；유한원모의방진가이보조포투설계，제고효솔，대제비분말야금근정성형구건유교위중요적공정응용의의。
Pre-alloyed powders of Ti-6Al-4V and Ti-60 were prepared through hot isostatic pressing (HIP) route. The tensile properties of two typical powder metallurgy (PM) titanium alloys HIPped from two different kinds of cans were tested, and the fracture surface morphology was studied by SEM. The simulation, using MSC.Marc software of capsule/powder shrinkage during HIPping for two different can designs was presented. The numerical simulations of Hipping experiments indicate that improper can design shows great probability of capsule failures, which is in accordance with the experimental data. Capsule failure will deteriorate the mechanical properties of the PM alloys, and finite element method is a useful tool for can design, especially for manufacturing near-net-shape components.