Creep properties of ball-milled and HIPed pure tantalum

A relatively new processing approach which could reduce manufacturing costs emcompasses the hot isostatic pressing of net and near-net shapes from particulate material. In addition to minimizing machining, this method also has the capacity to improve microstructural and mechanical properties. The eq...

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Bibliographic Details
Published inScripta materialia Vol. 45; no. 4; pp. 447 - 454
Main Authors Xu, Q, Hayes, R.W, Lavernia, E.J
Format Journal Article
LanguageEnglish
Published New York, NY Elsevier Ltd 31.08.2001
Elsevier Science
Subjects
Applied sciences
Ball-milling
Creep
Cross-disciplinary physics: materials science; rheology
Exact sciences and technology
HIP
Materials science
Materials synthesis; materials processing
Metals. Metallurgy
Physics
Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation
Tantalum
Tantalum
Creep
Ball-milling
HIP
Ball mill
Metal powder
Hot isostatic pressing
Mechanical properties
XRD
Experimental study
Powder metallurgy
Sintered metal
Sintering
Powder grinding
Microstructure
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Summary:A relatively new processing approach which could reduce manufacturing costs emcompasses the hot isostatic pressing of net and near-net shapes from particulate material. In addition to minimizing machining, this method also has the capacity to improve microstructural and mechanical properties. The equivalent creep properties between powder source samples and wrought ones suggest that powder metallurgy is a viable approach for attaining equivalent high temperature properties in the refractory metals and alloys. Ball-milling is one of various techniques for the synthesis of nanocrystalline alloys. In this process, powders are repeatedly fractured and welded during collisions among the rapidly moving balls and the containment vessel. This technique may be used to synthesize nanocrystalline alloys from pre-alloyed powders (referred to as 'mechanical milling') as well as from elemental powder blends ('mechanical alloying'). In the present study, bulk Ta material was produced by using ball-milling and HIP techniques, and its creep properties were evaluated. The objective of this paper is to provide the preliminary results about the ball-milled and HIPed pure Ta.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:1359-6462
1872-8456
DOI:10.1016/S1359-6462(01)01044-2