ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
The effects of equal channel angular pressing (ECAP), further heat treatment and rollingon the structure and room temperature mechanical properties of the commercial aluminum alloys6061 (Al-0.9Mg-0.7Si) and 1560 (Al-6.5Mg-0.6Mn) were investigated. It has been shown that thestrength of the alloys after ECAP is higher than that achieved after conventional processing. PriorECAP solution treatment and post-ECAP ageing can additionally increase the strength of the 6061alloy. Under optimal ageing conditions a yield strength (YS) of 434 MPa and am ultimate tensilestrength (UTS) of 470 MPa were obtained for the alloy. Additional cold rolling leads to a YS andUTS of 475 and 500 MPa with 8% elongation.It was found that the post-ECAP isothermal rolling of the 1560 alloy resulted in the formation of anano-fibred structure and a tensile strength (YS = 540 MPa and UTS = 635 MPa) that has neverpreviously been observed in commercial non-heat treatable alloys
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/22/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.114.91.pdf
