金属加工（热加工）Issue(3)：151-160,10.
粉末床熔融成形18Ni300合金的性能一致性研究
Study on consistency of properties of 18Ni300 alloy fabricated by laser powder bed fusion
张长春 1闫琴 1李华 1倪允强 1孙玉成 1孟晓曦 1张军利1
作者信息
- 1. 潍柴动力股份有限公司 山东潍坊 261061
- 折叠
摘要
Abstract
Martensitic aging steel has high strength and excellent toughness,and is widely used in aerospace,petrochemical,marine equipment and other fields.Taking 18Ni300 alloy as the research object,the defects and properties of 18Ni300 alloy fabricated in different areas were discussed in this paper.The results showed that the variation trend of the density of the samples fabricated in different single-laser areas was basically the same.The response surface method was used to analyze the process parameters,and the relationship model between the density and the laser power,scanning speed and hatch distance was obtained,and the preferred parameters were determined.Under the preferred parameters,the mechanical properties of the 18Ni300 samples fabricated in the whole area were excellent and the difference rate was low.The tensile strength,yield strength and elongation of the samples in the single-laser area were 1180～1186MPa,1024～1034MPa and 13%,respectively,and those of the samples in the dual-laser area were 1166MPa,1015MPa and 12%,respectively.The difference rates of tensile strength,yield strength and elongation in the single-laser and dual-laser areas were 1.1%,0.9%and 5.2%,respectively,showing good consistency.If the printing process was interrupted and then resumed,a step mark would be generated at the break,and the tensile property would be slightly reduced.关键词
18Ni300合金/工艺参数/致密度/双光束/力学性能/打印中断Key words
18Ni300 alloy/process parameters/relative density/dual-laser/mechanical properties/process interrupt引用本文复制引用
张长春,闫琴,李华,倪允强,孙玉成,孟晓曦,张军利..粉末床熔融成形18Ni300合金的性能一致性研究[J].金属加工（热加工）,2025,(3):151-160,10.
