电焊机2025，Vol.55Issue(3)：7-14,8.DOI:10.7512/j.issn.1001-2303.2025.03.02
面向深海装备的Ti-6Al-4V合金增材制造:组织及性能研究
Additive Manufacturing of Ti-6Al-4V Alloy for Deep-Sea Equipment:A Study on Microstructure and Properties
摘要
Abstract
This study aims to address the challenges encountered in traditional forging and casting processes when working with TC4 titanium alloy for deep-sea equipment.The study employs Selective Laser Melting(SLM)technology for the fabri-cation of TC4 titanium alloy and conducts an in-depth investigation of its microstructure and mechanical properties.It was found that the TC4 titanium alloy prepared by SLM exhibits a needle-like α'martensitic structure,which is significantly dif-ferent from the equiaxed grain structure of the traditional rolled state,and almost no β phase was detected in the SLM samples.The TC4 titanium alloy prepared by SLM demonstrated a nanohardness of 5.36 GPa,which is substantially higher than the 1.54 GPa of the traditionally rolled state.Moreover,it has a tensile strength of up to 1123.9 MPa and an elongation rate of 9.78%.Although the impact toughness is 43 J,slightly lower than the 59.5 J of the rolled TC4,it still meets the na-tional standard requirements.This study indicates that the TC4 titanium alloy prepared by SLM technology not only meets the application standards for deep-sea equipment in terms of mechanical properties but also surpasses traditional materials in some aspects,playing a significant role in advancing the development of deep-sea equipment.关键词
激光选区熔化技术(SLM)/TC4钛合金/微观组织/力学性能/深海装备Key words
selective laser melting(SLM)/TC4 titanium alloy/microstructure/mechanical properties/deep-sea equipment分类
金属材料引用本文复制引用
王怀慎,董鹏,汪卓然,贾本业,胡焱玲,田胜云..面向深海装备的Ti-6Al-4V合金增材制造:组织及性能研究[J].电焊机,2025,55(3):7-14,8.基金项目
山西省重点研发计划(202102150401003) （202102150401003）
