Y2O3对激光选区熔化TC4钛合金组织性能的影响

程玉龙, 李振华, 尹博, 黄洁清, 章煜, 宋都都

doi:10.16577/j.issn.1001-1560.2025.0096

材料保护 >

2025 , Vol. 58 >Issue 6: 52 - 64

DOI: https://doi.org/10.16577/j.issn.1001-1560.2025.0096

研究论文

Y₂O₃对激光选区熔化TC4钛合金组织性能的影响

展开

1浙江海洋大学海洋工程装备学院； 2中国科学院兰州化学物理研究所固体润滑国家重点实验室

李振华(1976－),教授,博士,研究方向为表面工程及摩擦学,电话:15957070228,E-mail:lizh760905＠zjou.edu.cn

收稿日期: 2025-01-16

修回日期: 2025-02-17

录用日期: 2025-02-20

网络出版日期: 2025-07-09

基金资助

固体润滑国家重点实验室开放课题(LSL-2407)；国家自然科学基金(51205359)

收起

Effect of Y₂O₃ on the Microstructure and Properties of Selective Laser Melting TC4 Alloys

Expand

(1.School of Marine Engineering Equipment, Zhejiang Ocean University, Zhoushan 316022, China；2.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China)

LI Zhenhua (1976－), Professor, Ph.D., Research Focus: Surface Engineering and Tribology, Tel.:15957070228, E-mail: lizh760905＠zjou.edu.cn

Received date: 2025-01-16

Revised date: 2025-02-17

Accepted date: 2025-02-20

Online published: 2025-07-09

Supported by

Open Projects of State Key Laboratory of Solid Lubrication(LSL-2407)；National Natural Science Foundation of China (51205359)

Fold

摘要

采用激光选区熔化(SLM)技术制备TC4 钛合金组织易出现晶粒粗大的现象，以及耐磨性能较差的问题。针对该问题，在SLM 制备TC4 钛合金过程中添加适量Y2O3，分析其对沉积态TC4 钛合金组织性能的影响。结果表明，适量添加Y2O3显著细化TC4 钛合金的微观组织，从而提升其力学性能和耐磨性能。与未添加Y2O3的情况相比，当Y2O3含量为0.10%时，屈服强度从700 MPa 提高到1 086 MPa(提高55%)，抗拉强度从819 MPa 提高到1 255 MPa(提高50%)，延伸率从8.04%下降到7.00%(下降12.9%)，实现强度与延展性的良好平衡。当Y2O3含量为0.15%时，TC4 钛合金的显微硬度从308.8 HV 提高到377.1 HV(提高22%)，并且展现出更优的耐磨性能。该研究为改善SLM 制备的TC4 钛合金力学性能提供了理论指导和数据支持。

关键词： 激光选区熔化; TC4 钛合金; 稀土; 显微组织; 力学性能; 摩擦学性能

本文引用格式

程玉龙, 李振华, 尹博, 黄洁清, 章煜, 宋都都 . Y₂O₃对激光选区熔化TC4钛合金组织性能的影响[J]. 材料保护, 2025 , 58(6) : 52 -64 . DOI: 10.16577/j.issn.1001-1560.2025.0096

Abstract

The microstructure of TC4 titanium alloy prepared by selective laser melting(SLM) technology is prone to the phenomenon of coarse grains and poor wear resistance.To address this issue, an appropriate amount of Y2O3 was added during the SLM preparation process of TC4 titanium alloy, and its impact on the microstructure and properties of the resulting alloy was analyzed.Results showed that the appropriate addition of Y2O3 could significantly refine the microstructure of the TC4 titanium alloy, leading to improved mechanical properties and enhanced wear resistance.Compared to samples without Y2O3, when the Y2O3 content was 0.10%, the yield strength increased from 700 MPa to 1 086 MPa (a 55%increase), the tensile strength rose from 819 MPa to 1 255 MPa (a 50%increase), and the elongation decreased from 8.04%to 7.00%(a 12.9% reduction), which resulted in a good balance between strength and ductility.When the Y2 O3 content was increased to 0.15%, the microhardness of the TC4 titanium alloy increased from 308.8 HV to 377.1 HV (a 22%increase), indicating a significant improvement in wear resistance.In general,this study provided valuable theoretical insights and robust empirical evidence to support the enhancement of the mechanical properties of TC4 titanium alloys fabricated via SLM.

Key words： selective laser melting; TC4 titanium alloy; rare earth; microstructure; mechanical properties; tribological properties

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract