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INFLUENCE OF MANGANESE, SILICON AND ALUMINIUM ON THE TRANSFORMATION BEHAVIOR OF LOW ALLOYED TRIP-STEELS

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

18 Scopus citations

Abstract

In this work, the influence of additions of aluminium, phosphorus, silicon and manganese and of the heat treatment on the microstructure and the mechanical properties of low-alloyed TRIP-steels was investigated. The main results can be stated in brief: • Silicon can be substituted as a whole by aluminium. After heat treatment the alloy possesses acceptable mechanical properties. • Substituting silicon partially by aluminium (0.6 %Si and 1 %Al, alloy C) or completely by a combination of aluminium and phosphorus (0.1 %P and 1 %Al, alloy B) significantly increases the retained austenite +R m in the alloys. The product (Equation presented) * Ag is the highest for alloys B and C. g 2 • Reducing manganese from 1.5% to 0.6% (alloy D) dramatically decreases the volume fraction of austenite formed during the intercritical anneals. To obtain optimized mechanical properties the annealing parameters in the bainitic range have to be shifted to lower temperatures and shorter holding times.

Original languageEnglish
Title of host publication42nd Mechanical Working and Steel Processing Conference Proceedings
PublisherIron and Steel Society
Pages549-561
Number of pages13
ISBN (Electronic)1886362459, 9781886362451
StatePublished - 2000
Event42nd Mechanical Working and Steel Processing Conference - Toronto, Canada
Duration: 22 Oct 200025 Oct 2000

Publication series

Name42nd Mechanical Working and Steel Processing Conference Proceedings

Conference

Conference42nd Mechanical Working and Steel Processing Conference
Country/TerritoryCanada
CityToronto
Period22/10/0025/10/00

Keywords

  • influence of the annealing parameters
  • low alloyed TRIP-steels
  • mechanical properties
  • microstructure
  • retained austenite

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