This study examines the high-temperature tensile properties of AZ31 and AZ31-1.0Ca-0.2Ce alloys in different rolling directions. Tensile test results at 250 °C showed that the ductility of AZ31-1.0Ca-0.2Ce alloy increased threefold in the 90° perpendicular direction to rolling direction. Moreover, both strength and elongation values of AZ31-1.0Ca-0.2Ce alloy were higher than those of AZ31. Macro-texture measurements revealed that AZ31 and AZ31-1.0Ca-0.2Ce alloys showed strong and weakened basal texture in the rolling direction, respectively. The combined effect of secondary phases and texture weakening increased the high-temperature ductility (49%) of AZ31-1.0Ca-0.2Ce. In the rolling direction, yield (YS) and ultimate tensile strength of AZ31-1.0Ca-0.2Ce were obtained as 115 and 121 MPa, respectively. These values were higher than AZ31 alloy due to the stronger texture of the non-basal planes. The fracture surface of AZ31 samples proved that the rough and crack-dominated surface led to brittle fracture formation. However, fine-sized dimples resulted in a ductile fracture in AZ31-1.0Ca-0.2Ce samples.
ÖzBu çalışmada, Mg-2.5Al-0.3Mn-0.4La-0.2Gd alaşımı düşük basınçlı kokil kalıba döküm yöntemiyle başarılı bir şekilde üretilmiştir. Döküm sonrası 350℃ de 4,8 ve 12 saat boyunca homojenleştirme ısıl işlemi uygulanmıştır. Kuru ortamda ileri-geri aşınma testleri homojenleştirilmiş numunelere 1,2 ve 3 kg yük altında uygulanmış ve hacimsel metal kaybı hesaplanmıştır. Aşınma test sonuçları ve mikroyapı arasındaki ilişki optik mikroskop, taramalı elektron mikroskobu ve X-Ray Difraksiyon (XRD) metotları kullanılarak araştırılmıştır.
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