Achieving strength-ductility synergy of laser powder bed fusion Ti-6.5Al-2Zr-1Mo-1V alloy by regulating laser power

被引：0
|
作者：
Zhou, Jiachen [1 ,2 ]
Su, Baoxian [1 ,3 ]
Wang, Binbin [1 ,3 ]
Luo, Liangshun [1 ,2 ]
Liu, Tong [2 ,4 ]
Wang, Yanan [1 ,2 ]
Wang, Liang [1 ,3 ]
Su, Yanqing [1 ,3 ]
Guo, Jingjie [1 ,2 ]
Fu, Hengzhi [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China
[2] Anhui Chungu 3D Printing Inst Intelligent Equipme, HIT Chungu Joint Res Ctr Addit Mfg Mat, Wuhu 241200, Anhui, Peoples R China
[3] Harbin Inst Technol, Zhengzhou Res Inst, Zhengzhou 450000, Peoples R China
[4] Anhui Polytech Univ, Sch Mat Sci & Engn, Wuhu 241000, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2024年 / 32卷
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Laser powder bed fusion; Ti-6.5Al-2Zr-1Mo-1V; Laser power; Microstructure; Texture; Mechanical properties; TI-6AL-4V ALLOY; HEAT-TREATMENT; MECHANICAL-PROPERTIES; BETA-PHASE; MICROSTRUCTURE; MARTENSITE; TEXTURE; EVOLUTION;
D O I：
10.1016/j.jmrt.2024.07.236
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In general, the Ti-6.5Al-2Zr-1Mo-1V (TA15) components fabricated via laser powder bed fusion (L-PBF) exhibit high strength and low ductility. Herein, we report a novel approach to enhance the comprehensive mechanical properties of L-PBF TA15 alloy by adjusting the laser power. Samples processed using the optimal laser power exhibit a grid structure of alternating wide and narrow prior-(3 grains (PBGs), the inside of which is composed of a fully martensitic microstructure. The paper discusses in detail the alterations in the microstructure of samples processed at both low and high laser powers, clarifying the relationship between microstructure and mechanical properties. Thinner martensite contributes to higher strength, while a homogenous microstructure improves ductility. These findings provide valuable insights for controlling microstructure and achieving strength-ductility synergy in L-PBF additive manufacturing of titanium alloys.
引用
收藏
页码：1480 / 1492
页数：13
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