Abstract
A new method called new strain induced and melt activated (new SIMA) is introduced firstly through using equal channel angular extrusion (ECAE) as strain induced step in SIMA and completing melt activated step by semi-solid isothermal treatment, by which semi-solid billet with fine spheroidal grains with average grain size of 5 μm can be prepared. Comparing with common SIMA, semi-solid processed satellite angle frame components using semi-solid billet prepared by new SIMA have higher room temperature and 393 K high temperature mechanical properties.
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