Microstructural evolution and thixoformability of semi-solid aluminum 319s alloy during re-melting
作者： XG Hu , Q Zhu , HX Lu , F Zhang , DQ Li
DOI: 10.1016/J.JALLCOM.2015.07.121
关键词: Microstructural evolution 、 Materials science 、 Alloy 、 Metallurgy 、 Process window 、 Isothermal process 、 Microstructure 、 Aluminium 、 Partial melting 、 Scientific method
摘要: Abstract The aim of this paper is to characterize both microstructural evolution and thixoformability during partial melting semi-solid 319s alloy. criteria was initially investigated by thermodynamic analysis. In-situ observation re-melting performed a Confocal Laser Scanning Microscope determine the effect heating rate on characteristics. Meanwhile, alloy at extremely low also in order understand mechanism process. studies demonstrated that suitable for thixocasting because controllable liquid fraction operating window 15 °C. process effected temperature time. primary particles can be divided into four stages, coarsening isothermal test 227 μm 3 /s. effective method obtain desirable microstructure manage time state controlling soaking
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