Compression behavior of a ferritic-martensitic Cr-Mo steel

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Abstract

The compression behavior of a ferritic-martensitic Cr-Mo steel is characterized for strain rates ranging from 10-4 s-1 to 10-1 s-1 and engineering strains up to 40%. Adiabatic heating causes a
reduction in flow stress during continuous compression at a strain rate of 10-1 s-1. No reduction in the flow stress is observed if interrupted compression tests are performed with loading and holding steps. Two work-hardening stages with work-hardening rates decreasing linearly with the flow stress are identified and interpreted in terms of the KocksMecking model. The microstructural evolution is governed by storage of dislocations leading to formation of fine subgrains within martensitic laths.
Original languageEnglish
JournalProceedings of the Risø International Symposium on Materials Science
Volume33
Pages (from-to)423-430
ISSN0907-0079
Publication statusPublished - 2012
Event33rd Risø International Symposium on Materials Science: Nanometals - Status and Perspective - DTU Risø Campus, Roskilde, Denmark
Duration: 3 Sep 20127 Sep 2012

Conference

Conference33rd Risø International Symposium on Materials Science
LocationDTU Risø Campus
CountryDenmark
CityRoskilde
Period03/09/201207/09/2012

Bibliographical note

Proceedings of the 33rd Risø International Symposium on Materials Science : Nanometals - Status and Perspective

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