基于TB6钛合金损伤件的增材再制造工艺研究
Research on Additive Remanufacturing Process based on TB6 Titanium Alloy Damaged Parts
应俊龙 1巢昺轩 1李智勇1
作者信息
- 1. 昌河飞机工业(集团)有限责任公司,江西景德镇 330034
- 折叠
摘要
针对TB6钛合金损伤件,传统的修复方式均存在种种弊端,因此探究基于TB6钛合金的增材再制造工艺方法,摸索了激光功率、扫描速度等工艺参数对熔覆层特征尺寸的影响规律,选取了合适的搭接率,得出了较优的工艺参数,即:激光功率为1 500 W,扫描速度为10 mm/s,送粉速率为0.7 r/min,搭接率为45％,层高为0.5 mm.对基体、热影响区、修复区开展了显微组织及显微硬度测试,修复区显微组织主要为等轴晶和柱状晶.经测试,修复区底部、中部、顶部的显微硬度相比于基体提升了 13.8％、10.8％、7.3％.
Abstract
Aimed at TB6 titanium alloy damaged parts,the traditional repair methods had all kinds of disadvantages,so the remanufacturing technology of TB6 titanium alloy was studied,and it was studied that the effects of laser power and scanning speed on the characteristic size of cladding layer,the suitable overlapping ratio was selected,and the optimum pro-cessing parameters were obtained as follows:laser power 1 500 W,scanning speed 10 mm/s,powder feeding rate 0.7 r/min,overlap ratio 40％,layer height 0.5 mm.The microstructures and micro hardness of the matrix,heat-affected zone and repair zone were tested,the microstructure of the restoration area were mainly equiaxed grain and columnar crystal.Compared with that of the matrix,the micro hardness of the base,middle and top of the restoration area increased with 13.8％,10.8％and 7.3％respectively.
关键词
TB6钛合金/增材修复/特征尺寸/搭接率/显微硬度Key words
TB6 titanium alloys/additive repair/characteristic size/lap ratio/micro hardness引用本文复制引用
出版年
2024
NETL
NSTL
万方数据