Grain Size Dependence of Yield Stress and Flow Stress in the Age-hardened Mg-Zn Alloy

Processing and microstructure–property relations of high-strength low-alloy (HSLA) Mg–Zn–Ca alloys

“…The grain size effect on the yield strength can be estimated by the Hall-Petch relationship, r = r 0 + kD À1/2 , where r 0 is the frictional stress, D is the grain size, and k is the Hall-Petch constant. A least-square fit of the TYS data of the 'fully recrystallized' rods in Table 4 [51,52]. This can be explained by the higher solid-solution hardening in Mg-5Zn [52] compared to our lean alloy.…”

Mechanism of Precipitation Hardening of Magnesium-Zinc Alloys

“…The duplex slip such as the pencil slip was observed under such a particular stress condition such as in the vicinity of grain boundary (8).…”

“…However, Chun et al (7) suggested that another strengthening mechanism was possible by the change of grain size or aging conditions. The present authors have indicated that the precipitation hardening of polycrystalline magnesium-zinc alloys should be investigated on the basis of the size and volume fraction of the precipitates (8).…”

“…Since the effect of grain size on the strength has already been discussed (8), the grain size of tensile specimens in…”