The Correlations Between the Magnetic Susceptiblity of Sigma Phase in a Duplex Stainless Steel and the Prior Aging Conditions

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review

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Detail(s)

Original languageEnglish
Title of host publicationASM Proceedings: Heat Treating
Pages433-435
Publication statusPublished - 1998

Conference

TitleHeat Treating: Proceedings of the 18th Conference
PlaceUnited States
CityCincinatti, OH
Period12 - 15 October 1998

Abstract

Samples of a duplex stainless steel were long-term aged at 600° - 800° C for duration up to 3017 hours. All the aged specimens had very small magnetic susceptibilities at room temperature but the susceptibilities exhibited drastic increase when the measuring temperature decreased below approximately 100K. The sigma phase (σ) in the steel was found to be responsible for the observed magnetic properties. For a given aging temperature, the susceptibilities of the samples decrease with increasing aging time but the volume fractions of σ in the samples did not changed appreciably. The decreases in susceptibilities is thought to be due to some sort of ordering in σ. The magnetic measurement results also reveal that σ is antiferrimagnetic.

Citation Format(s)

The Correlations Between the Magnetic Susceptiblity of Sigma Phase in a Duplex Stainless Steel and the Prior Aging Conditions. / Shek, C. H.; Wong, K. W.; Lai, J. K L.

ASM Proceedings: Heat Treating. 1998. p. 433-435.

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review