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

Philip Prangnell; Samuel Tammas-Williams; Philip Withers; Iain Todd

doi:10.1007/s11661-016-3429-3

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

Philip Prangnell, Samuel Tammas-Williams, Philip Withers, Iain Todd

The University of Sheffield

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Abstract

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 (HIP) 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.

Original language	English
Pages (from-to)	1939-1946
Number of pages	7
Journal	Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science
Volume	47
Issue number	5
Early online date	16 Mar 2016
DOIs	https://doi.org/10.1007/s11661-016-3429-3
Publication status	Published - May 2016

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Next Generation Multi-Dimensional X-ray Imaging
Withers, P. (PI), Burke, G. (CoI), Cernik, R. (CoI), Haigh, S. (CoI), Lee, P. (CoI) & Lionheart, W. (CoI)
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title = "The Effectiveness of Hot Isostatic Pressing for Closing Porosity in Titanium Parts Manufactured by Selective Electron Beam Melting",

abstract = "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 (HIP) 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.",

author = "Philip Prangnell and Samuel Tammas-Williams and Philip Withers and Iain Todd",

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doi = "10.1007/s11661-016-3429-3",

language = "English",

volume = "47",

pages = "1939--1946",

journal = "Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science",

issn = "1073-5623",

publisher = "Springer Nature",

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The Effectiveness of Hot Isostatic Pressing for Closing Porosity in Titanium Parts Manufactured by Selective Electron Beam Melting. / Prangnell, Philip; Tammas-Williams, Samuel; Withers, Philip et al.
In: Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science, Vol. 47, No. 5, 05.2016, p. 1939-1946.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - The Effectiveness of Hot Isostatic Pressing for Closing Porosity in Titanium Parts Manufactured by Selective Electron Beam Melting

AU - Prangnell, Philip

AU - Tammas-Williams, Samuel

AU - Withers, Philip

AU - Todd, Iain

PY - 2016/5

Y1 - 2016/5

N2 - 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 (HIP) 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.

AB - 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 (HIP) 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.

U2 - 10.1007/s11661-016-3429-3

DO - 10.1007/s11661-016-3429-3

M3 - Article

SN - 1073-5623

VL - 47

SP - 1939

EP - 1946

JO - Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science

IS - 5

ER -

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

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