Skip to main navigation Skip to search Skip to main content

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

C. H. Shek, K. W. Wong, J. K L Lai

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

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.
Original languageEnglish
Title of host publicationASM Proceedings: Heat Treating
Pages433-435
Publication statusPublished - 1998
EventHeat Treating: Proceedings of the 18th Conference - Cincinatti, OH, United States
Duration: 12 Oct 199815 Oct 1998

Conference

ConferenceHeat Treating: Proceedings of the 18th Conference
PlaceUnited States
CityCincinatti, OH
Period12/10/9815/10/98

Fingerprint

Dive into the research topics of 'The Correlations Between the Magnetic Susceptiblity of Sigma Phase in a Duplex Stainless Steel and the Prior Aging Conditions'. Together they form a unique fingerprint.

Cite this