Thermal stress history displayed in an Ashby type diagram, application to the continuous casting of aluminum alloys

Gilles Dour, Francis Durand, Yves Brechet

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

2 Citations (Scopus)

Abstract

In solidification processes, thermal contraction in the solid state can make internal stresses, and possibly cracks. The formation of such defects is history-dependent, i.e. it depends on the time evolution of the relevant parameters, temperature, stress, strain rate... We propose to display this history on Ashby type diagrams, i.e. as normalized stress-temperature plots. This proposal is illustrated in a particular application, the continuous casting of aluminum alloys. We built a simple semi-analytical model to predict the thermal stress history. We apply it with five constitutive laws currently used: plastic type laws, creep laws and Ashby law (in fact the sum of every mechanism laws involved in aluminum Ashby's map). The proposed presentation makes it clear that plastic type laws should be avoided. More generally, Ashby type diagram could be used as a test for constitutive laws before their application in numerical models for non-isothermal processes, in solidification, shape casting, welding....

Original languageEnglish
Title of host publicationProceedings of the 1995 7th Conference on Modeling of Casting, Welding and Advanced Solidification Processes
PublisherThe Minerals, Metals & Materials Society
Pages295-302
Number of pages8
Publication statusPublished - 1995
Externally publishedYes
EventConference on Modeling of Casting, Welding and Advanced Solidification Processes 1995 - London, United Kingdom
Duration: 10 Sep 199515 Sep 1995
Conference number: 7th

Conference

ConferenceConference on Modeling of Casting, Welding and Advanced Solidification Processes 1995
Country/TerritoryUnited Kingdom
CityLondon
Period10/09/9515/09/95

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