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A new kind of age hardenable martensitic stainless steel with high strength and toughness
School of Material Science and Engineering, University of Science and Technology, Bejing.ORCID iD: 0000-0003-4888-6237
School of Material Science and Engineering, University of Science and Technology, Bejing.
School of Material Science and Engineering, University of Science and Technology, Bejing.
School of Material Science and Engineering, University of Science and Technology, Bejing.
2007 (English)In: Ironmaking & steelmaking, ISSN 0301-9233, E-ISSN 1743-2812, Vol. 34, no 4, p. 285-289Article in journal (Refereed) Published
Abstract [en]

Following analysis of typical age hardenable martensitic stainless steels, a new kind of maragingstainless was developed. The new maraging stainless steel showed high strength, ultimate tensilestrength (UTS) 5 1670 MPa, high toughness, K IC 5 83·9 MPa m1/2 and hardness as high as 478 HVin the age hardened condition. Microstructural study with an optical and transmission electron microscope revealed the typical microstructure of age hardenable stainless steel containing lathmartensite and precipitates. TixNi precipitates were identified by transmission electron microscopy, which were responsible for the increase in mechanical properties after age hardening. The results of natural salt spray test showed that the corrosion resistance of new maraging stainless steel approached to the corrosion resistance of 304L stainless steel.

Place, publisher, year, edition, pages
2007. Vol. 34, no 4, p. 285-289
National Category
Other Materials Engineering
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-8071DOI: 10.1179/174328107X155303Local ID: 682a3082-4ef3-4322-9523-47b80cf28c40OAI: oai:DiVA.org:ltu-8071DiVA, id: diva2:980961
Note
Upprättat; 2007; 20150416 (farakh)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Akhtar, Farid

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