G.P. Chen
,
T.R. Zhou
,
H. Yan
,
F.Y. Zhang
,
null
,
null
,
null
金属学报(英文版)
The effect of predeformation manner,
predeformation ratio and isothermal heat-treat parameter on the
non-dendrite structure of AZ61 magnesium alloy in SIMA process was
studied. Under coequal heat-treat condition, the impact of the hot
upsetting predeformation on semi-solid microstructure in SIMA
process was compared with that of the cold compressive
predeformation. The results indicate that non-dendrite
microstructure in AZ61 magnesium alloy billets can be obtained by
hot or cold upsetting predeformation in SIMA process, although their
mechanisms of evolution are different. Increasing hot or cold
upsetting predeformation ratio can enhance the effect and quality of
the non-dendrite microstructure formed before storage energy up to
saturation, but the proper isothermal temperature and holding time
should be selected.
关键词:
AZ61 magnesium alloy
,
null
