激光粉末床熔合制备TC17钛合金的显微组织及室温和高温力学性能

IF 7 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: A Pub Date : 2025-09-18 DOI:10.1016/j.msea.2025.149143

Zhiyang Kong , Tongsheng Deng , Hao Zhang , Yongjian Zheng , Zixiang Qiu , Qizhong Huang , Haixuan wang , Yang Yang , Yaoyao Ding , Liwen Liang , Shimin Fang , Miaocheng Tian , Chaoyue Tang , Roman Mishnev

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引用次数: 0

摘要

研究了退火、固溶和时效热处理对激光粉末床熔合TC17合金室温和高温拉伸强度的影响。LPBF制备的TC17合金在固溶态和时效态均以α片层为主。合金强度的优化是通过诱导次生α相的析出来实现的。室温拉伸性能分析确定910℃为最佳退火温度。在910°C/1h/AC（空冷）+ 800°C/1h/WQ（水淬）+ 630°C/4h/AC的最终热处理条件下，合金的室温强度比沉积态提高了35.9%。在400℃时，LPBF制备的TC17合金样品的高温拉伸延展性比标准样品提高了73%，同时保持了所需的拉伸强度，从而优化了其力学性能。

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Microstructure, mechanical properties at room temperature and high temperature of TC17 titanium alloy fabricated by laser powder bed fusion

This study investigates the influence of annealing, solution treatment, and aging heat treatment on the room-temperature and high-temperature tensile strength of TC17 alloy fabricated by laser powder bed fusion (LPBF). The TC17 alloy prepared by LPBF predominantly exhibits α lamellae in both the solution-treated and aged states. The optimization of alloy strength is achieved by inducing the precipitation of the secondary α phase. Analysis of room-temperature tensile properties identifies 910 °C as the optimal annealing temperature. Under the final heat treatment regime of 910 °C/1h/AC (air cooling) + 800 °C/1h/WQ (water quenching) + 630 °C/4h/AC, the room-temperature strength of the alloy increases by 35.9 % compared to the as-deposited state. At 400 °C, the high-temperature tensile ductility of the TC17 alloy samples fabricated by LPBF increased by 73 % compared to the standard, while maintaining the required tensile strength, thereby optimizing their mechanical properties.

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来源期刊

Materials Science and Engineering: A 工程技术-材料科学：综合

CiteScore

11.50

自引率

15.60%

发文量

1811

审稿时长

31 days

期刊介绍： Materials Science and Engineering A provides an international medium for the publication of theoretical and experimental studies related to the load-bearing capacity of materials as influenced by their basic properties, processing history, microstructure and operating environment. Appropriate submissions to Materials Science and Engineering A should include scientific and/or engineering factors which affect the microstructure - strength relationships of materials and report the changes to mechanical behavior.