Microstructure evolution and strengthening mechanisms of aluminium alloy A357 manufactured by Selective Laser Melting

Heng Rao; Xinhua Wu; Chris Huw John Davies

Microstructure evolution and strengthening mechanisms of aluminium alloy A357 manufactured by Selective Laser Melting

Heng Rao, Xinhua Wu, Chris Huw John Davies

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research

Abstract

The aim of this work is to correlate the effects of Selective Laser Melting (SLM) and special post heat treatment parameters on mechanical properties of the alloy. Since conventional casting and SLM are two completely different techniques, it is not obvious that the postprocessing parameters for heat-treatable aluminium cast alloys can be directly transferred to SLMed alloys. Via the adjustment of SLM parameters, an ultrafine microstructure with submicron-sized Al grains can be obtained, resulting in a comparable or even better mechanical properties with respect to its traditional casting counterparts. With special subsequent heat treatments, nano-sized eutectic Si gets coarsened. Also, the aspect ratio of the Si particles and Al grains in two directions of the SLMed sample is largely diminished heat treatment

Original language	English
Title of host publication	17th Australian International Aerospace Congress : AIAC 2017
Subtitle of host publication	Melbourne, Australia, 26-28 February, 2017
Place of Publication	Barton, ACT
Publisher	Engineers Australia
Pages	110-115
Number of pages	6
ISBN (Electronic)	9781922107855
Publication status	Published - 2017
Event	Australian International Aerospace Congress 2017 - Melbourne Cricket Ground, Melbourne, Australia Duration: 26 Feb 2017 → 28 Feb 2017 Conference number: 17th http://aiac17.com/

Conference

Conference	Australian International Aerospace Congress 2017
Abbreviated title	AIAC 2017
Country/Territory	Australia
City	Melbourne
Period	26/02/17 → 28/02/17
Internet address	http://aiac17.com/

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http://search.informit.com.au/documentSummary;dn=740509987503320;res=IELENG

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Rao, H., Wu, X., & Davies, C. H. J. (2017). Microstructure evolution and strengthening mechanisms of aluminium alloy A357 manufactured by Selective Laser Melting. In 17th Australian International Aerospace Congress : AIAC 2017: Melbourne, Australia, 26-28 February, 2017 (pp. 110-115). Engineers Australia. http://search.informit.com.au/documentSummary;dn=740509987503320;res=IELENG

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title = "Microstructure evolution and strengthening mechanisms of aluminium alloy A357 manufactured by Selective Laser Melting",

abstract = "The aim of this work is to correlate the effects of Selective Laser Melting (SLM) and special post heat treatment parameters on mechanical properties of the alloy. Since conventional casting and SLM are two completely different techniques, it is not obvious that the postprocessing parameters for heat-treatable aluminium cast alloys can be directly transferred to SLMed alloys. Via the adjustment of SLM parameters, an ultrafine microstructure with submicron-sized Al grains can be obtained, resulting in a comparable or even better mechanical properties with respect to its traditional casting counterparts. With special subsequent heat treatments, nano-sized eutectic Si gets coarsened. Also, the aspect ratio of the Si particles and Al grains in two directions of the SLMed sample is largely diminished heat treatment",

author = "Heng Rao and Xinhua Wu and Davies, {Chris Huw John}",

year = "2017",

language = "English",

pages = "110--115",

booktitle = "17th Australian International Aerospace Congress : AIAC 2017",

publisher = "Engineers Australia",

address = "Australia",

note = "Australian International Aerospace Congress 2017, AIAC 2017 ; Conference date: 26-02-2017 Through 28-02-2017",

url = "http://aiac17.com/",

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Rao, H, Wu, X & Davies, CHJ 2017, Microstructure evolution and strengthening mechanisms of aluminium alloy A357 manufactured by Selective Laser Melting. in 17th Australian International Aerospace Congress : AIAC 2017: Melbourne, Australia, 26-28 February, 2017. Engineers Australia, Barton, ACT, pp. 110-115, Australian International Aerospace Congress 2017, Melbourne, Victoria, Australia, 26/02/17. <http://search.informit.com.au/documentSummary;dn=740509987503320;res=IELENG>

Microstructure evolution and strengthening mechanisms of aluminium alloy A357 manufactured by Selective Laser Melting. / Rao, Heng; Wu, Xinhua; Davies, Chris Huw John.
17th Australian International Aerospace Congress : AIAC 2017: Melbourne, Australia, 26-28 February, 2017. Barton, ACT: Engineers Australia, 2017. p. 110-115.

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research

TY - GEN

T1 - Microstructure evolution and strengthening mechanisms of aluminium alloy A357 manufactured by Selective Laser Melting

AU - Rao, Heng

AU - Wu, Xinhua

AU - Davies, Chris Huw John

N1 - Conference code: 17th

PY - 2017

Y1 - 2017

N2 - The aim of this work is to correlate the effects of Selective Laser Melting (SLM) and special post heat treatment parameters on mechanical properties of the alloy. Since conventional casting and SLM are two completely different techniques, it is not obvious that the postprocessing parameters for heat-treatable aluminium cast alloys can be directly transferred to SLMed alloys. Via the adjustment of SLM parameters, an ultrafine microstructure with submicron-sized Al grains can be obtained, resulting in a comparable or even better mechanical properties with respect to its traditional casting counterparts. With special subsequent heat treatments, nano-sized eutectic Si gets coarsened. Also, the aspect ratio of the Si particles and Al grains in two directions of the SLMed sample is largely diminished heat treatment

AB - The aim of this work is to correlate the effects of Selective Laser Melting (SLM) and special post heat treatment parameters on mechanical properties of the alloy. Since conventional casting and SLM are two completely different techniques, it is not obvious that the postprocessing parameters for heat-treatable aluminium cast alloys can be directly transferred to SLMed alloys. Via the adjustment of SLM parameters, an ultrafine microstructure with submicron-sized Al grains can be obtained, resulting in a comparable or even better mechanical properties with respect to its traditional casting counterparts. With special subsequent heat treatments, nano-sized eutectic Si gets coarsened. Also, the aspect ratio of the Si particles and Al grains in two directions of the SLMed sample is largely diminished heat treatment

M3 - Conference Paper

SP - 110

EP - 115

BT - 17th Australian International Aerospace Congress : AIAC 2017

PB - Engineers Australia

CY - Barton, ACT

T2 - Australian International Aerospace Congress 2017

Y2 - 26 February 2017 through 28 February 2017

ER -

Microstructure evolution and strengthening mechanisms of aluminium alloy A357 manufactured by Selective Laser Melting

Abstract

Conference

Access to Document

Equipment

Centre for Additive Manufacturing (MCAM)

Centre for Electron Microscopy (MCEM)

Cite this