EFFECT OF AGING AND THERMOMECHANICAL PROCESSES IN TWIN ROLL CAST MG AZ91 ALLOY SHEET


Duygulu O., Ucuncuoglu S., Oktay G., Yücel O. , KAYA A. A.

Magnesium Technology Symposium 2010, Washington, United States Of America, 14 - 18 February 2010, pp.527-528 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Washington
  • Country: United States Of America
  • Page Numbers: pp.527-528

Abstract

6 mm thick and 1500 mm wide magnesium alloy AZ91 sheet was produced by twin roll casting. Sheets were homogenized between 350-475 degrees C for 1-24 h. Afterwards, they were warm rolled down to 2.75 mm. Age hardening was also performed on twin roll cast AZ91 alloy sheets. Specimens were aged at 150, 200 and 250 degrees C for up to 100 h. Characterization was performed by light microscope, TEM-EDS, and XRD after twin roll casting and also after each thermomechanical process including aging. Tensile tests were performed for mechanical properties. Moreover, the age-hardening response of Mg AZ91 alloy was examined by micro hardness test.