Mechanical and metallurgical properties of injection molded AZ91D magnesium alloy.

Effects of Processing Parameters on Microstructure and Mechanical Properties of Rheomolded AZ91D Magnesium Alloy

“…Figure 11 shows tensile results of rheomolded AZ91D at different injection velocities. It can be seen that both the tensile strength and elongation goes up with the improvement of injection velocity, which is similar to the thixomolded result of Ghosh et al [28] and Tsukeda et al [13]. As the injection velocity increases from 1.3 to 1.8 m/s, the tensile strength and elongation increases rapidly.…”

“…Thixomolded, a semisolid metal processing technology for manufacturing magnesium alloy parts in one step in a single machine, has received great interest in recent years [10,11]. Ghosh et al [12] and Tsukeda et al [13] carried out the earliest study of thixomolded technology, and some researches on thixomolded AZ91D, AM60 and AZ61 have been conducted. Czerwinski et al [14,15] have conducted systematic studies on thixomolded AZ91D, including the selection and use of raw materials, the evolution of the microstructure and the variation of mechanical properties with change in experimental parameters.…”

Mechanical properties of thixomolded AZ91D magnesium alloy

“…The strength and elongation go up with the improvement of shot velocity in this study and the literatures. Although the tensile strength is close between this study and Tsukeda et al (1999), the mechanical properties of this experiment are obviously the most satisfied at the same velocity level irrespective of the influence of primary solid volume fraction. The best results can be obtained at the highest screw shot velocity with the worst in this study still better than the HPDC standard.…”

“…However, the data of mechanical property in the literature seems to be particularly insignificant for the purpose of accurate evaluation of the currently available processing technologies for magnesium alloys. It appears that barrel temperature and shot velocity have the largest effect on the final properties (Carnahan et al, 1993;Ghosh et al, 1995;Tsukeda et al, 1999;Czerwinski et al, 2001). The best results are obtained when barrel temperature, shot velocity and injection pressure are the highest.…”

“…The effect of shot velocity on the mechanical properties is plotted in Fig. 6, accompanied by the data value of Ghosh et al (1995) and Tsukeda et al (1999).…”