Influence of Spatter on Porosity, Microstructure, and Corrosion of Additively Manufactured Stainless Steel Printed Using Different Island Size

被引：1

作者：

Vukkum, Venkata Bhuvaneswari ^{[1
,2
]}

Sanborn, Taylor ^{[1
]}

Shepherd, John ^{[1
]}

Saptarshi, Sourabh ^{[3
]}

Basu, Rakesh ^{[1
]}

Horn, Timothy ^{[3
]}

Gupta, Rajeev Kumar ^{[1
]}

机构：

[1] North Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA

[2] Pacific Northwest Natl Lab, Phys & Computat Sci Directorate, Richland, WA 99354 USA

[3] North Carolina State Univ, Dept Mech & Aerosp Engn, Raleigh, NC 27695 USA

来源：

CRYSTALS | 2024年 / 14卷 / 04期

基金：

美国国家科学基金会;

关键词：

additive manufacturing; laser powder bed fusion; stainless steel; microstructure; corrosion; PROCESS PARAMETERS; METALLIC COMPONENTS; 316L; BEHAVIOR;

D O I：

10.3390/cryst14040328

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Specimens of 316 L stainless steel were printed using laser powder bed fusion (LPBF), a popular metal additive manufacturing (AM) technique, with varying island sizes. Not many researchers have considered the impact of spatter while optimizing LPBF printing parameters. In this research, the influence of spatter was considered while also investigating the effect of varied island size on the microstructure, surface roughness, microhardness, and corrosion resistance of LPBF-316 L. No correlation was observed between surface roughness or microhardness and minor variations in island size. However, a correlation was drawn between varied island sizes and porosity in LPBF-316 L. The specimens associated with larger island sizes showed significantly enhanced corrosion resistance due to fewer manufacturing defects and reduced porosity, attributed to the minimal influence of the spatter. Based on analysis, the LPBF parameters were revised, which lead to superior corrosion resistance of LPBF-316 L, attributed to high density and reduced porosity.

引用

页数：14

共 61 条

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