HOT TEAR SUSCEPTIBILITY OF Al-Mg-Si ALLOYS WITH VARYING IRON CONTENTS

被引：0

作者：

Sweet, L. ^{[1
,2
]}

Easton, M. A. ^{[1
,2
]}

Taylor, J. A. ^{[1
,3
]}

Davidson, C. J. ^{[1
,4
]}

Lu, L. ^{[4
]}

Couper, M. J. ^{[2
,5
]}

StJohn, D. H. ^{[6
]}

机构：

[1] Monash Univ, CAST Cooperat Res Ctr CAST CRC, Clayton, Vic 3800, Australia

[2] Monash Univ, Dept Mat Engn, Victoria, Australia

[3] Univ Queensland, Sch Mech & Min Engn, St Lucia, Qld 4072, Australia

[4] Div Proc Sci & Engn, CSIRO, Pullenvale, QLD 4069, Australia

[5] ARC Ctr Excellence Design Light Met, Pullenvale, QLD, Australia

[6] Univ Queensland, Ctr Adv Mat Proc & Mfg, Brisbane, Qld 4072, Australia

来源：

TMS 2012 141ST ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS, VOL 2: MATERIALS PROPERTIES, CHARACTERIZATION, AND MODELING | 2012年

关键词：

hot tearing; 6xxx; Al-Mg-Si alloys; Fe intermetallics; MODEL;

D O I：

暂无

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Hot tear susceptibility in a cast 0.53Si-0.33Mg-xFe 6060 aluminum alloy was investigated using the CAST Hot Tear rig, designed to simulate hot tearing in DC casting. The rig has two cast bars, one that is used to measure the load response and one which is fixed at both ends to restrain thermal contraction so that hot tearing could be observed if it occurred. The iron ( Fe) content, ranging from 0.02-0.5wt pet, was seen to have a major influence on the load response during solidification and the tear rating of these alloys. The findings are related to the influence of Fe content on the morphology, prevalence and precipitation sequence of the beta-Al5FeSi and alpha-AlFeSi Fe-containing intermetallic phases. Observations made of hot tear fracture surfaces show that these phases may play distinctly different roles within the mechanism of hot tearing in these alloys.

引用

页码：275 / 282

页数：8

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