首页|超高速激光金属沉积增材制造K648高温合金的显微组织与性能

超高速激光金属沉积增材制造K648高温合金的显微组织与性能

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
采用一种新型的超高速激光金属沉积工艺以提高高铬高温合金的制造效率.分别使用透射电子显微镜、拉伸试验机、磨损试验机和电化学工作站对超高速激光金属沉积高铬K648高温合金的析出相生长行为、高温力学性能、耐磨性和耐腐蚀性进行研究,并与传统激光金属沉积工艺进行比较.结果表明,超高速激光金属沉积K648合金的析出相尺寸明显小于传统激光金属沉积工艺制备的K648合金,700 ℃下的高温强度更高,且具有良好的耐磨性和耐腐蚀性.总之,超高速激光金属沉积制造的K648高铬高温合金具有良好的综合性能.
Micro structure and properties of K648 superalloy additively manufactured by extreme high-speed laser metal deposition
In order to improve the manufacturing efficiency of high-chromium superalloys,an innovative extreme high-speed laser metal deposition(EHLMD)process was used.The growth behavior of precipitated phases,high-temperature mechanical properties,wear resistance,and corrosion resistance of EHLMD K648 superalloy were investigated and compared with conventional laser metal deposition(CLMD)using transmission electron microscope,tensile tester,wear tester and electrochemical workstation,respectively.The results reveal that the precipitated phase size in EHLMD K648 superalloy is significantly smaller than that in CLMD K648 superalloy.Moreover,EHLMD K648 superalloy demonstrates higher tensile strength at 700 ℃,superior wear resistance,and excellent corrosion resistance compared to CLMD K648 superalloy.Consequently,the K648 superalloy manufactured through EHLMD technique exhibits favorable comprehensive properties.

additive manufacturingextreme high-speed laser metal deposition(EHLMD)K648 superalloymicrostructure evolutionproperties

王开明、刘炜、都东、常保华、刘冠、胡永乐、仝永刚、张明军、张健、鞠江

展开 >

长沙理工大学汽车与机械工程学院,长沙 410114

清华大学机械工程系高端装备界面科学与技术全国重点实验室,北京 100084

中南大学机电工程学院,长沙 410083

香港城市大学材料科学与工程系,香港 999077

展开 >

增材制造 超高速激光金属沉积 K648高温合金 显微组织演变 性能

National Natural Science Foundation of ChinaNatural Science Foundation of Hunan Province,ChinaChangsha Key Research and Development Project,ChinaChangsha Municipal Natural Science Foundation,ChinaTribology Science Fund of State Key Laboratory of Tribology in Advanced Equipment,China

522053342022JJ40495kh2201275kq2202196SKLTKF21B08

2024

10.1016/S1003-6326(24)66534-9

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCD
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2024.34(7)