铸造技术2025，Vol.46Issue(6)：564-570,7.DOI:10.16410/j.issn1000-8365.2025.5034
激光选区熔化制备GH4099合金力学性能的各向异性
Anisotropy of the Mechanical Properties of GH4099 Alloy Fabricated via Selective Laser Melting
摘要
Abstract
In response to the increasing demand for reliable performance of nickel-based superalloy components in recent years,this study focused on a GH4099 superalloy fabricated via selective laser melting to investigate the anisotropy in its microstructure and mechanical properties.The microstructure of the as-deposited GH4099 alloy was characterized via OM,SEM and EBSD,and tensile tests were conducted at room temperature in both the horizontal and deposition directions to investigate the relationships between the microstructure and mechanical properties.The experiment reveals that the as-deposited sample consists of columnar crystals that epitaxially grow along the deposition direction,with a small amount of small carbides present but no second phase precipitation.The yield strength and fracture strength in the horizontal direction are both greater than those in the deposition direction,but the elongation is lower.The fracture surfaces in both directions exhibit typical transgranular fracture morphologies.关键词
激光选区熔化/GH4099高温合金/微观组织/力学性能/各向异性Key words
selective laser melting/GH4099 superalloy/microstructure/mechanical properties/anisotropy分类
矿业与冶金引用本文复制引用
陈子昂,李琪馨,焦世坤,钱远宏,宋超群,韩冬雪,赵春志,王亮..激光选区熔化制备GH4099合金力学性能的各向异性[J].铸造技术,2025,46(6):564-570,7.基金项目
国家重点研发计划(2022YFF1400302) （2022YFF1400302）
