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-structure formation in peritectic systems [J]. Metall Trans A, 1995, 26A: 1583-1590. [8]Lo T S, Dobler S, Plapp M, et al. Two-phase microstructure selection in peritectic solidification: from island... interface structure from planar to shallow cellular. This transient rate is larger than the theoretical value of vc=6.94×10-7m/s. Compared with vt=vc/k=1.01×10-6m/s, the cellular-dendritic transient rate......
the blocky primary Si of fast solidification (Fig. 5(a)). In addition, primary α(Al) of Alloy C in the overflowed portion is globular (Fig. 2(c3)) instead of developed dendritic structure of fast... of ultrasonic power and casting speed on solidification structure of 7050 aluminum alloy ingot in ultrasonic field [J]. Journal of Central South University of Technology, 2010, 17: 431-436. [11] WU Shu-sen......
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on solidification structure and columnar to equiaxed transition (CET) in the cast ingot was also investigated to find that decrease in superheat from 52 K to 20 K causes the equiaxed crystal zone ratio... was first established in Pro/E software, then the thermal field was calculated in ProCAST, and finally the solidification structure was simulated by CAFE calculation. The CAFE calculationwas carried out......
gradually emerge, while this phenomenon is particularly obvious for the powder with particle size above 75 μm. Key words: argon gas atomization; nickel-base superalloy; solidification structure; hollow...心缺陷,实验样品为经筛分后粒径大于75 μm的粉末.统计观察发现:粉末空心缺陷与粉末尺寸存在相关性,粒径小于60 μm的René104合金粉末没有观察到空心现象.René104合金粉末空心现象主要出现在粒径大于75 μm的粉末. 图3 René104合金粉末内部凝固组织 Fig. 3 Solidification structure of René104 alloy......
9R structure in drawn industrial single crystal copper wires CHEN Jian(陈 建)1, 2, YAN Wen(严 文)1, 2, FAN Xin-hui(范新会)2 1. School of Materials Science and Chemical Engineering, Xi’an Technological... dislocation cells sharing boundaries parallel to drawn direction. Besides the typical microstructures, 9R structure configurations were observed in the wires. The formation of 9R polytypes may be caused......
technique. The effect of Bi-based ferroelectrics of BiCrO3 on the crystal structure, dielectric and piezoelectric properties was investigated. X-ray diffraction patterns indicate that trace BiCrO3 addition(x=0?0.02) causes insignificant change in crystal structure, and an obvious secondary phase is observed in the samples with x>0.02. The piezoelectric constant d33 and the electromechanical coupling......
casted by EMC usually shows flexible fracture. Key words: AZ31 magnesium alloy; electromagnetically continuous casting; solidification structure; mechanical property  ...号:TG 149.7; TG 146.2+2 文献标识码:A Effect of electromagnetically continuous casting on structure and mechanical properties of magnesium alloy AZ31 ZHANG Shi-bin1, DENG Kang1......
. Solidification process [M]. USA: MacGrraw-Hill, 1974. [17] WANG Q G, CACERES C H. Mg effects on the eutectic structure and tensile properties of Al-Si-Mg alloys [J]. Mater Sci Forum, 1997, 242: 159-164. [18...Trans. Nonferrous Met. Soc. China 24(2014) 1645-1652 Effect of cooling rate on solidification parameters and microstructure of Al-7Si-0.3Mg-0.15Fe alloy Rui CHEN, Yu-feng SHI, Qing-yan XU, Bai-cheng......