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. 263-268. [5]LI Yuan-dong, HAO Yuan, CHEN Ti-jun, et al. Effects of isothermal heat treatment on microstructure evolution and formability of AZ91D magnesium alloy in semi-solid state [J]. The Chinese... treatment method is not feasible to prepare AZ91D magnesium alloy semi-solid billets. 3.3 Microstructure of materials prepared by SIMA On heating at 560℃, microstructure of materials prepared by SIMA......
step by semi-solid isothermal treatment, semi-solid billet with fine spheroidal grains of 25 μm can be prepared successfully. Compared with common SIMA, thixoformed satellite angle frame components.... However, for magnesium alloy, coarse and non-globular grains often exist in the microstructure of semi-solid billets prepared by common SIMA method, that is, semi-solid isothermal treatment of upsetted......
. [20] YANG Ming-bo, PAN Fu-sheng, CHENG Ren-jun, BAI Liang. Effect of semi-solid isothermal heat treatment on the microstructure of Mg-6A1-1Zn-0.7Si alloy [J]. J Mater Process Tech, 2008, 206(1/3...-bo, SHEN Jia, PAN Fu-sheng. Effect of Sb on microstructure of semi-solid isothermal heat-treated AZ61-0.7Si magnesium alloy [J]. Transaction of Nonferrous Metals Society of China, 2009, 19(1): 32-39......
suitable for semi-solid processing[2]. Fig.3 Microstructures of transverse section of as-deformed alloys at room temperature for different compression ratios after isothermal holding at 625... was used to fit the experimental data for grain coarsening. Fig.8 shows the evolution of the cube of the average globule diameter D3 as a function of isothermal soaking time in the semi-solid state......
of semi-solid Al-Si hypoeutectic alloy with re-melting heat treatment[J]. J Mater Process Tech, 2004, 151: 155-164. [17] BI G, WANG H W, WU R J. Interfacial reaction of ABOw/ZL109Al composites [J]. Mater...; Abstract: 6061Al matrix composites reinforced by ZnO-coated Al18B4O33 whiskers were fabricated by a semi-solid......
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liquid A356 castings too. Key words: semi-solid metal (SSM) forming; heat treatment; A356; brake caliper; gravity die casting; automotive 1 Introduction A method employed by the automotive industry... of this alloy are shown in Table 1[3]. The use of SSM processing to produce automotive components has been described by WINTERBOTTOM[1]. The heat treatment cycles that are currently applied to semi-solid......
microscopy. Table 2 Technological parameters of semi-solid isothermal treatment 3 Results and discussion 3.1 Microstructures of AZ91D magnesium alloy in three states before SSIT Fig.2 shows the microstructures of AZ91D magnesium alloy in three states before semi-solid isothermal treatment. The as-cast microstructure is composed of the coarse dendrite structure of a-Mg and the eutectic b-Mg17Al12......
of semi-solid forged alloys, resulting in improvement of tensile properties. Key words: Ti14 alloy; semi-solid forging; microstructure; tensile properties; heat treatment 1 Introduction Titanium alloys... the tensile properties of Ti14 alloy after semi-solid forging at different temperatures, as compared with that after conventional forging. Furthermore, the effect of heat treatment on tensile......
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