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A proposed Swedish national standard and best practice for detection of Ar in PM hip material
RISE - Research Institutes of Sweden (2017-2019), Materials and Production, KIMAB.
SIS Swedish Standards Institute, Sweden.
Bodycote Hot Isostatic Pressing, Sweden.
Bodycote Hot Isostatic Pressing, Sweden.
Show others and affiliations
2018 (English)In: Euro PM 2018 Congress and Exhibition, European Powder Metallurgy Association (EPMA) , 2018Conference paper, Published paper (Refereed)
Abstract [en]

Ar in metal is present as gaseous voids which affect the material performance; most notably the mechanical properties. In agreement with literature findings, our investigation confirms this for 316L steel produced by PM HIP. Detecting the Ar is possible by microscopy, but more reliably with inert gas fusion followed by gas chromatography or mass spectrometry. The users of these techniques have accumulated experience over the years and consider them robust, especially in terms of distinguishing a presence or absence of Ar. Since consensus has emerged, a standard is now possible. We propose firstly a national standard. It may be used as a quality agreement between the purchaser and provider of the PM HIP service. The proposed standard considers the distinctiveness of PM HIP. For example that Ar tends to segregate in PM HIP cans. In fact, consensus has also been reached on how to reliably sample from PM HIP cans. © European Powder Metallurgy Association (EPMA).

Place, publisher, year, edition, pages
European Powder Metallurgy Association (EPMA) , 2018.
Keywords [en]
Argon, Gas chromatography, Mass spectrometry, 316L steels, Best practices, Material performance, National standard, Quality agreement, Swedishs, Powder metallurgy
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-43977Scopus ID: 2-s2.0-85079055107ISBN: 9781899072507 (print)OAI: oai:DiVA.org:ri-43977DiVA, id: diva2:1396170
Conference
European Powder Metallurgy Congress and Exhibition, Euro PM 2018, 14 October 2018 through 18 October 2018
Note

 Funding text 1: This research was funded through the Membership Research Consortia (MRC) at Swerea KIMAB. Supporting companies are AB Sandvik Materials Technology, Bodycote HIP AB, Erasteel Kloster AB and Carpenter Powder Products AB. The authors would like to thank Staffan Thurfjell at TAKON and for Peter Paplewski at Bruker explaining their GC and MS-based techniques.

Available from: 2020-02-25 Created: 2020-02-25 Last updated: 2020-03-05Bibliographically approved

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