The Effectiveness of Hot Isostatic Pressing for Closing Porosity in Titanium Parts Manufactured by Selective Electron Beam Melting

被引：0
|
作者：
Samuel Tammas-Williams
Philip J. Withers
Iain Todd
Philip B. Prangnell
机构：
[1] University of Manchester,School of Materials
[2] University of Sheffield, Department of Materials Science and Engineering
来源：
Metallurgical and Materials Transactions A | 2016年 / 47卷
关键词：
Additive Manufacturing; Selective Laser Melting; Internal Porosity; Pore Volume Fraction; Crack Propagation Resistance;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Ti-6Al-4V parts, produced by selective electron beam melting additive manufacturing, have been studied by X-ray computed tomography (XCT) to track pore closure during a standard hot isostatic pressing (HIPing) cycle. Comparison of repeated XCT scans before and after HIPing, on worst-case samples with different geometries, confirmed that all internal porosity was shrunk to below the resolution limit of the equipment used (~5 µm) following the HIPing cycle, apart from defects with surface connected ligaments.
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页码：1939 / 1946
页数：7
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