The phase selection of hyper-peritectic Al-47wt.%Ni alloy solidified under different pressures was investigated. results show that Al3Ni2 and Al3Ni phases coexist at ambient pressure, while another new α-Al exists simultaneously when high pressure. Based on the competitive growth theory dendrite, a kinetic stabilization metastable peritectic with respect to stable ones is predicted for solidifi...

The effect of Cu or Ni addition on creep properties a heat-resistant aluminum (Al) alloy (with composition Al-5Mg-3.5Zn (mol%)) strengthened by precipitates T-Al6Mg11Zn11 intermetallic phase was investigated. quaternary alloys with various contents (0.25-3 mol%) (0.5-2 were solution-treated at 470°C and then aged 200°C for 10 hours. tests conducted using the heat-treated specimens under 105 MPa...

Bu çalışmada, Al85Ni5Fe5Nd5 (at.%) alaşımı hızlı katılaştırma yöntemi ile ince şeritler halinde ve mekaniksel alaşımlama tozlar elde edilmiştir. Alaşımların morfolojik yapısı, faz tanımlaması, parçacık boyutu parçacıkların dağılımı gibi yapısal özellikleri X-ışını difraksiyonu (XRD) taramalı elektron mikroskobu (SEM) kullanılarak incelenmiştir. kristalleşme sıcaklıkları, aktivasyon enerjisi dön...

The effect of high pressure on the microstructure hypo-peritectic Al–38wt.%Ni alloy was studied. results show that Al3Ni and Al3Ni2 phases coexist at ambient pressure. However, it becomes a typical hyper-eutectic when synthesized 2 GPa 4 GPa. Meanwhile, interface temperature calculated with combination BCT dendrite growth model, which is suitable for phase. According to highest principle, resul...