Structural evolution of ZA27 alloy during semi-solid isothermal heat treatment
来源期刊：中国有色金属学报(英文版)2001年第1期
论文作者：陈体军 马颖 郝远 陆松 许广济 孙军
文章页码：98 - 102
Key words：ZA27 alloy; semi-solid state; isothermal heat treatment; structural evolution; spherical structure
Abstract: The structural evolution of ZA27 alloy modified by element Zr was studied during semisolid isothermal heat treatment, and its transformation mechanism was also discussed. The results indicate that the primary α phase changes from equiaxed grains to spherical grains gradually at semisolid temperature of 460. With increasing isothermal time, the eutectic between boundaries ofα phase diffuses toward α phase, and the primary equiaxed grain arms merge and boundaries tend to disappear to form near particle grains. Further, the eutectic left on α boundaries melts to make the near particle grains separate, and form spherical structure at last.
