双丝电弧增材制造制备的形状记忆合金Ti-Ni-Al-V的微观结构与性能

Microstructure and properties of a shape memory alloy Ti-Ni-Al-V fabricated by double-wire arc additive manufacturing.

作者信息

Zhao Xiaoxin, Chen Xinya, Ma Tao, Zhang Peng, Li Jianguo, Zhang Xin

机构信息

Research Center of Energy Engineering Advanced Joining Technology, Beijing Institute of Petrochemical Technology, Beijing 102627, China.

State Key Laboratory of Smart Manufacturing for Special Vehicles and Transmission System, Baotou 014030, China.

出版信息

Heliyon. 2024 Jan 9;10(2):e24347. doi: 10.1016/j.heliyon.2024.e24347. eCollection 2024 Jan 30.

DOI:10.1016/j.heliyon.2024.e24347

PMID:38293528

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10825477/

Abstract

In this study, a novel heterogeneous double-wire arc additive manufacturing method was used for the in-situ synthesis of a novel Ti-Ni-Al-V alloy wall. The results indicated that the synthesis wall was composed of the NiTi, B, and NiTi phases from the bottom to the top. With an increase in deposition layers, the Ti2Ni content decreased. The hardness at the bottom was ∼685.4 HV, while that of the middle and stable regions was 553 HV. The maximum compressive strength was 2100 MPa. The fracture morphology was brittle. After cyclic compression, the recoverable and unrecoverable strains were 4.79 % and 1.21 %, respectively, indicating excellent recovery characteristics.

摘要

在本研究中，采用一种新型的异质双丝电弧增材制造方法原位合成了一种新型Ti-Ni-Al-V合金壁。结果表明，合成壁从底部到顶部由NiTi、B和NiTi相组成。随着沉积层数的增加，Ti2Ni含量降低。底部硬度约为685.4 HV，而中部和稳定区域的硬度为553 HV。最大抗压强度为2100 MPa。断裂形态为脆性。循环压缩后，可恢复应变和不可恢复应变分别为4.79%和1.21%，表明具有优异的恢复特性。