Browsing Khairel Rafezi Ahmad, Associate Prof Dr. by Subject "Alloys"

Now showing items 1-3 of 3

    • The application of Fluidity Spiral in sand-mold casting 

      Mohd Ichwan, Nasution; Mohd Nasir, Zainal Arif; Che Mohd Ruzaidi, Ghazali; Shamsul Baharin, Jamaludin; Khairel Rafezi, Ahmad; Faizul, Che Pa; Mohd Fitri, Mohamad Wahid; Murizam, Darus (Universiti Kebangsaan Malaysia (UKM), 2008-12-03)
      The term fluidity is always used in the cast-metals industry. Fluidity is the reciprocal of viscosity. The foundryman job is to search the amount of quantity that will permit him to evaluate the relative ability of a given ...

    • Effect of age hardening on Aluminum alloys: a study of motorcycle piston 

      M.Z., Fizam; Khairel Rafezi, Ahmad; Ruhiyuddin, Mohd Zaki; Ruslizam Darus (Universiti Malaysia Perlis, 2009-12-01)
      This paper reported on the effect of age hardening on the aluminum alloys piston. These studies were carried out to improve the hardness of the aluminum alloys piston by using age hardening method. The AlSiCuMg alloys with ...

    • The effects of solutionizing temperatures on microstructures of as-received A357 alloy 

      Mazlee, Mohd Noor; Shamsul Baharin, Jamaludin; Shaiful Rizam, Shamsuddin; Mohabattul Zaman, SNS Bukhari; Khairel Rafezi, Ahmad; Raudhah, Othman (Universiti malaysia Perlis, 2009-12-01)
      Solution treatment has been carried out on as-received A357 alloy at two solution treatment temperatures of 530ºC and 550ºC for 11 hours. The microstructural study was performed by using optical microscope. Optical ...