Formation mechanism of AlNbTiVZr high entropy alloy/Ti multi-principal element alloy by laser direct energy deposition: Microstructure evaluation and mechanical properties

被引：4

作者：

Zhang, Yumeng ^{[1
]}

Zhao, Yiqing ^{[1
]}

Sun, Longxiang ^{[1
]}

Wang, Leilei ^{[1
]}

Li, Linqin ^{[1
]}

Zhan, Xiaohong ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 211106, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2024年 / 997卷

关键词：

High-entropy alloy; Microstructure; Mechanical properties; Fracture toughness; TITANIUM-ALLOY; BEHAVIOR; MO;

D O I：

10.1016/j.jallcom.2024.174782

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel refractory multi-principal element alloy with high strength and toughness matching characteristics was successfully prepared by mixing TA15 alloy with AlNbTiVZr high-entropy alloy. The effects of the composition ratio of the high-entropy alloy on the microstructure evolution and its influence on properties were investigated in this study. The tensile strength of the 70 wt % AlNbTiVZr HEA/Ti multi-principal element alloy is 1.18 times more than that of TA15 alloy, which has a value of 1068.0 +/- 2.1 MPa. The increase in strength is mainly due to the production of equiaxed fine grains and the development of a robust and resilient body-centered cubic (BCC) phase in the alloy following the introduction of the high-entropy alloy. The attainment of the acceptable tensile strain is the result of the combined influence of the BCC matrix phase and the dispersed second-phase particles. The exceptional mechanical capabilities of the 70 wt % AlNbTiVZr/Ti multi-principal element alloy undeniably enhance its potential for use as a structural component in aerospace load-bearing constructions.

引用

页数：15