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, a calculation method for the embodied coefficient of energy carriers was deduced using Leontief inverse matrix based on the existing data sources. With relevant data of 2005-2007 in China, the embodied... Suppose that D is the direct consumption coefficient matrix: The embodied coefficient of energy is defined by  ......
of iron in Ni-Fe binary solid alloy was calculated by Miedema model based on the known thermodynamics datum filed. According to Raoult’s law, the relationship among the Fe/Ni ratio, reduction... production of laterite ore tends to combine with metal Ni, which is the reduction production of NiO in laterite ore, to be Fe-Ni alloy [8]. Thus, the varying activity of Fe will greatly affect......
of Ti-Sn system. BONDAR et al [23] and EREMENKO and VELIKANOVA [24] studied the phase transformation of the Ti81.5Sn18.5 alloy and the Sn-rich part by DTA. In addition, KUPER et al [25] found a new... of Ti5Sn3 containing Ni, rather than a ternary phase. Meanwhile, BERCHE et al [34] reported that Sn substitutes Ni in equiatomic TiNi alloy, forming a pseudo-binary system. More recently, a supplementary......
and forming a new soil-like matrix. The diagnostic model of bauxite residue was established to provide data support for the regeneration on disposal area. Key words: bauxite residue disposal area; soil... was to standardize the data. The principle of principal component analysis was the projection of data in the matrix in a certain coordinate system. The diagonalization of the matrix will produce feature roots......
for activation of nucleation sites in the component undercooling area. Key words: magnesium alloy; spray-forming; microstructure Mg-Al-Zn 系合金是目前应用最为广泛的镁合金之一,尤其是AZ91合金更是广受关注. Zn元素在Mg-Al合金中的作用一方面表现为自身的固溶强化... pattern(b) of as-sprayed AZ92 alloy 图8所示为喷射沉积AZ93合金的背散射电子像及2种主要合金元素的面扫描分析结果.由图8可以看出,Al 和Zn存在偏析,其中尤以Al 为甚.合金化元素Al与Mg形成的金属间化合物β-Mg17Al12相是择优析出的,故呈现明显的偏聚,主要沿晶粒边界析出,固溶在镁基体中的Al则均匀地分布在镁合金基体中;而Zn则在β-Mg17Al12相中......
and microstructure observation, the influence of cavity morphology on the creep behaviors of a single crystal nickel-base alloy was investigated. Due to the cavity with or without cracks exists in the as-cast... with the crack-free cavity, the bigger stress value appears in two sides of the cavity with cracks which propagates easily as creep goes on, this is the main reason resulting in the alloy with shorter creep......
Engineering, 1963, 1(1): 55-60. [20] 王 斌, 何德坪, 舒光冀. 泡沫Al合金的压缩性能及其能量吸收[J]. 金属学报, 2000, 36(10): 1037-1040.WANG Bin, HE De-ping, SHU Guang-ji. Compressive property and energy absorption of foamed Al alloy... of Education, Tsinghua University, Beijing 100084, China) Abstract: The A356 alloy foams were fabricated by gas injection method. The high-speed stirring and continuous addition of Al2O3 particles were......
Trans. Nonferrous Met. Soc. China 24(2014) 3051-3059 Vacuum assisted high-pressure die casting of AZ91D magnesium alloy at different slow shot speeds Qing-liang WANG1,2, Shou-mei XIONG1,2 1. School... 2013; accepted 27 January 2014 Abstract: The effects of vacuum assistance on the microstructure and mechanical properties of high-pressure die cast AZ91D alloy at different slow shot speeds were......
. 1 Mean number of freckles in each alloy associated 95% confidence intervals 从图2可以得知,元素含量的改变对其溶质膨胀系数影响很小,基本可以认为是一个恒定值,而对温度膨胀系数,某些元素含量的改变对其影响较大,如Al,Co元素. 表3列出了同一元素β与mβT数值上的比较(这里液相线斜率m值的来自二元合金相图,如表...好地预测雀斑形成.结果表明:基于二元合金相图的k值,预测结果与实验结果拟合较差,其线性拟合优度R2最大时仅为0.4;而采用实验和Thermo-Calc的k值,拟合较好,v2最大值分别达到0.87和0.95.最后,计算SX系列合金的P值,结果显示:单位含量的Hf元素对雀斑有最强的抑制作用,Ta元素的抑制作用次之;Al,Re元素对雀斑有较强的促进作用,W元素的促进作用次之. 关键词:雀斑;高温合金;成......
to be reasonable that precipitation of excess Si dominates the high-temperature reactions in the cast alloy. Another observation which is opposite to wrought Al-Mg-Si alloy is that the peak shifts.../s, were determined earlier [3,7]. The cast alloy investigated here has only a mass fraction of 0.31% Mg. This indicates that for cast Al-Si-Mg alloys the Si content is a driving force......