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ZTA15 钛合金在不同状态下的组织和性能
Microstructure and Properties of ZTA15 Titanium Alloy in Different States
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- DOI:
- 作者:
- 韩云飞 1，2 ，袁兵兵 1，2 ，孙 冰 1，2 ，刘义辉 1，2 ，乔海滨 1，2 ，李渤渤 1
HAN Yunfei1,2, YUAN Bingbing1,2, SUN Bing1,2, LIU Yihui1,2, QIAO Haibin1,2, LI Bobo1,2
- 作者单位:
- 1. 洛阳双瑞精铸钛业有限公司，河南 洛阳 471000；2.中国船舶集团有限公司 第七二五研究所，河南 洛阳 471000
1. Luoyang Sunrui Titanium Precision Casting Co., Ltd., Luoyang 471000, China; 2. No. 725 Research Institute, China State Shipbuilding Gorporation Limited, Luoyang 471000, China
- 关键词:
- ZTA15 钛合金；显微组织；力学性能；热等静压；退火
ZTA15 titanium alloy; microstructure; mechanical property; hot isostatic pressing; annealing
- 摘要:
- 采用熔模精密铸造技术制备了 ZTA15 钛合金棒材，对比研究了 ZTA15 钛合金铸态、退火、热等静压、热等
静压+退火态等不同条件下的组织与拉伸性能。 结果表明，TA15 钛合金在 4 种状态下的组织均由 α 和 β 两相组成，铸
态组织不均匀，存在残余应力，力学性能数据分布离散；退火态、热等静压态和热等静压+退火的组织逐渐趋于均匀，针
状 α 相粗化成片状，力学性能数据分布集中；热等静压+退火的组织和性能均匀性最高，力学性能数据分布集中度最高，
为最佳使用状态。
ZTA15 titanium alloy bar was prepared by investment precision casting technology. The microstructure and tensile properties of ZTA15 titanium alloy under different conditions such as-cast state, annealing state, hot isostatic pressing state, and hot isostatic pressing+annealing state were studied. The results show that the microstructure of TA15 titanium alloy in four states is composed of α and β phases, the as-cast microstructure is not uniform, there is residual stress, and the distribution of mechanical property data is discrete. The microstructure of annealed state, hot isostatic pressing state, and hot isostatic pressing +annealing state gradually tends to be uniform, and the needle-like α phase coarsenes into sheets, and the mechanical property data are distributed in a centralized manner. Hot isostatic pressing + annealing has the highest uniformity of microstructure and properties, and the highest concentration of mechanical property data distribution, which is the best use state.