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Sintering behavior and microstructure evolution of mechanically alloyed W–bronze composite powders by two-step ball milling process

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Main Authors: Kahtan S., Muhammed, Dr., Azmi, Rahmat, Prof., Khairel Rafezi, Ahmad, Dr.
Other Authors: tompetorage954@yahoo.com
Format: Article
Language:English
Published: Elsevier 2014
Subjects:
Metal matrix composites
Mechanical alloying
Sintering
Microstructure
Scanning electron microscopy (SEM)
Online Access:http://dspace.unimap.edu.my:80/dspace/handle/123456789/32493
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spelling my.unimap-324932014-04-10T06:56:03Z Sintering behavior and microstructure evolution of mechanically alloyed W–bronze composite powders by two-step ball milling process Kahtan S., Muhammed, Dr. Azmi, Rahmat, Prof. Khairel Rafezi, Ahmad, Dr. tompetorage954@yahoo.com Metal matrix composites Mechanical alloying Sintering Microstructure Scanning electron microscopy (SEM) Link to publisher's homepage at http://www.elsevier.com/ The miscibility of W in Sn and Cu is extremely poor. Sintering of W–bronze composites to their full density is proved to be difficult. To tackle this problem, the ball milling process of the W–bronze powder mixture proposed in this study was split into two steps. In the first step, the softness of Sn powder was exploited to modify the surface morphology of W particles. In the second step, Cu was added to the ball milled mixture. To achieve this goal, four 50 wt% W–bronze compact sets of different powder precursors and activator additions were produced. The sintering process was performed at 1150 °C. The two-step ball milled powder yielded sintered compacts of homogeneous microstructure of fine polygonal W grains dispersed in bronze matrix. They showed the highest hardness and densification levels. The sintered density, microstructure, hardness and densification mechanisms of the sintered compacts were investigated, examined and evaluated using different metallographic, microscopic and measurement facilities. 2014-03-11T03:17:17Z 2014-03-11T03:17:17Z 2013-01 Article Journal of Materials Science & Technology, vol.29 (1), 2013, pages 59-69 1005-0302 http://dspace.unimap.edu.my:80/dspace/handle/123456789/32493 http://www.sciencedirect.com/science/article/pii/S100503021200031X http://dx.doi.org/10.1016/j.jmst.2012.12.001 en Elsevier
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Metal matrix composites
Mechanical alloying
Sintering
Microstructure
Scanning electron microscopy (SEM)
spellingShingle Metal matrix composites
Mechanical alloying
Sintering
Microstructure
Scanning electron microscopy (SEM)
Kahtan S., Muhammed, Dr.
Azmi, Rahmat, Prof.
Khairel Rafezi, Ahmad, Dr.
Sintering behavior and microstructure evolution of mechanically alloyed W–bronze composite powders by two-step ball milling process
description Link to publisher's homepage at http://www.elsevier.com/
author2 tompetorage954@yahoo.com
author_facet tompetorage954@yahoo.com
Kahtan S., Muhammed, Dr.
Azmi, Rahmat, Prof.
Khairel Rafezi, Ahmad, Dr.
format Article
author Kahtan S., Muhammed, Dr.
Azmi, Rahmat, Prof.
Khairel Rafezi, Ahmad, Dr.
author_sort Kahtan S., Muhammed, Dr.
title Sintering behavior and microstructure evolution of mechanically alloyed W–bronze composite powders by two-step ball milling process
title_short Sintering behavior and microstructure evolution of mechanically alloyed W–bronze composite powders by two-step ball milling process
title_full Sintering behavior and microstructure evolution of mechanically alloyed W–bronze composite powders by two-step ball milling process
title_fullStr Sintering behavior and microstructure evolution of mechanically alloyed W–bronze composite powders by two-step ball milling process
title_full_unstemmed Sintering behavior and microstructure evolution of mechanically alloyed W–bronze composite powders by two-step ball milling process
title_sort sintering behavior and microstructure evolution of mechanically alloyed w–bronze composite powders by two-step ball milling process
publisher Elsevier
publishDate 2014
url http://dspace.unimap.edu.my:80/dspace/handle/123456789/32493
_version_ 1643796922272579584
score 13.214268

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