Microstructure and creep behavior of electron beam directed energy deposited TC11 titanium alloy

被引：11
作者：
Yao, Mengxin [1 ]
Yao, Zhengjun [1 ,2 ]
Yi, Chang [1 ]
Moliar, Oleksandr [3 ]
Soloviova, Tetiana [3 ]
Trosnikova, Iryna [3 ]
Yurkova, Alexandra [3 ]
Loboda, Petro [3 ]
Zhang, Shasha [1 ,2 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 211100, Peoples R China
[2] Minist Ind & Informat Technol, Key Lab Mat Preparat & Protect Harsh Environm, Nanjing 210016, Peoples R China
[3] Natl Tech Univ Ukraine, Igor Sikorsky Kyiv Polytech Inst, UA-03056 Kyiv, Ukraine
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2024年 / 913卷
基金：
中国国家自然科学基金;
关键词：
TC11 titanium alloy; Electron beam directed energy deposition; Creep behavior; HIGH-TEMPERATURE; MECHANICAL-PROPERTIES; TI-6AL-4V ALLOY; TENSILE;
D O I：
10.1016/j.msea.2024.147020
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The creep behavior of TC11 titanium alloy prepared by electron beam directed energy deposition (EB-DED) under various temperatures and stresses was investigated. The results indicated that TC11 prepared by EB-DED maintained excellent creep resistance in the temperature range from 550 degrees C to 600 degrees C, compared with the forged TC and TA series titanium alloys. The creep process accelerated with increasing temperature and stress, leading to elevated creep rates and shortened creep lifetimes. The improved creep resistance was related to the multiscale microstructures, i.e., the primary (3 columnar grains, the refined alpha lamellar microstructure and the solid solution strengthening effect of Si element predominantly existing in a nearly fully dissolved state.
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页数：12
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