Investigation on Porosity and Microhardness of 316L Stainless Steel Fabricated by Selective Laser Melting

被引：162

作者：

Yusuf, Shahir Mohd ^{[1
]}

Chen, Yifei ^{[1
]}

Boardman, Richard ^{[2
]}

Yang, Shoufeng ^{[1
]}

Gao, Nong ^{[1
]}

机构：

[1] Univ Southampton, Mat Res Grp, Fac Engn & Environm, Southampton SO17 1BJ, Hants, England

[2] Univ Southampton, VIS Xray Imaging Ctr, Fac Engn & Environm, Southampton SO17 1BJ, Hants, England

来源：

METALS | 2017年 / 7卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

porosity; microhardness; Selective Laser Melting (SLM); advanced X-ray computed tomography (XCT); MECHANICAL-PROPERTIES; CORROSION-RESISTANCE; GRAIN-STRUCTURE; MICROSTRUCTURE; BEHAVIOR; ALLOY; PARTS; NANOCOMPOSITES; TEXTURE; SURFACE;

D O I：

10.3390/met7020064

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study investigates the porosity and microhardness of 316L stainless steel samples fabricated by selective laser melting (SLM). The porosity content was measured using the Archimedes method and the advanced X-ray computed tomography (XCT) scan. High densification level (>= 99%) with a low average porosity content (similar to 0.82%) were obtained from the Archimedes method. The highest porosity content in the XCT-scanned sample was similar to 0.61. However, the pores in the SLM samples for both cases (optical microscopy and XCT) were not uniformly distributed. The higher average microhardness values in the SLM samples compared to the wrought manufactured counterpart are attributed to the fine microstructures from the localised melting and rapid solidification rate of the SLM process.

引用

页数：12

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