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, Amerika Birleşik Devletleri, 14 - 18 Şubat 2010, ss.527-528 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Washington
  • Basıldığı Ülke: Amerika Birleşik Devletleri
  • Sayfa Sayıları: ss.527-528
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

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.