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descriptions of volumetric properties between traditional alloy theories and SSA framework are discussed. Key words: systematic science of alloys; Au-Cu system; atomic volume; volume of formation...; 1 Introduction In order to get an entire understanding of the alloy systems, to establish phase diagrams and to search......
magnesium loss and decreases zinc loss. The yield strength, ductility and hardness of the 7039 aluminum alloy plays a major role in deciding weld quality of friction stir welded joints [9]. Friction...Trans. Nonferrous Met. Soc. China 27(2017) 493-506 Mechanical properties of friction stir welded armor grade Al-Zn-Mg alloy joints C. SHARMA1, V. UPADHYAY2, D. K. DWIVEDI3, P. KUMAR3 1. Rustamji......
. The reduction leads to the improvement of the corrosion resistance after extrusion which is then comparable with the commercial alloy AZ91D. Key words: magnesium-tin alloys; microstructure; corrosion...]. Therefore, there is a clear need for the development of new magnesium alloys with an optimal combination of creep and corrosion resistance[4-10]. Recently, the alloy AJ62 has been successfully......
alloy 7050 HAN Nian-mei, ZHANG Xin-ming, LIU Sheng-dan, HE Dao-guang, ZHANG Rong (School of Materials Science and Engineering, Central South University, Changsha 410083, China) Abstract: The influences of the solution heat treatment on the tensile properties and fracture toughness of the 7050 aluminum alloy were investigated by means of optical microscopy, scanning electron microscopy (SEM......
% to 8.0%. In addition, compared with matrix alloy, the wear mass loss of the composites is decreased from 111 to 78 mg under a load of 100 N for 120 min. Key words: in situ composite; magnetic chemistry... added into the aluminum melt. LU et al [16] fabricated in situ TiB2 reinforced Al alloy composites from Al-4% Cu matrix, TiO2 and B2O3 powders [16]. However, very few researchers have used master alloys......
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...; accepted 8 September 2013 Abstract: The effects of cooling rate on the solidification parameters and microstructure of Al-7Si-0.3Mg-0.15Fe alloy during solidification process were studied. To obtain......
is reliable and adequate for designing the composition and predicting the dc of glass forming alloy. Key words: critical dimension; glass forming alloy; artificial neural network; metallic glasses 1... can be obtained after the amorphous alloy has been prepared and/or even there are opposite cases [12]. The third method is the mathematical and/or physical equation [9,13-16]. For example, INOUE et al......
for both the external and internal alloy melt layers. These modifications are beneficial for the formation of a bimetal interface and fine and uniform grain structure of the clad composite hollow billet... and the diffusion of the elements at the interface is promoted. Key words: aluminum alloy; clad composite; hollow billet; horizontal continuous casting; electromagnetic stirring; numerical simulation 1......
DZ125合金熔体超温处理过程中的弛豫现象王常帅1,张军1,邹敏明1,刘林1,傅恒志1(1.陕西省西安市西北工业大学凝固技术国家重点实验室)摘 要:采用熔体超温处理方法考察了DZ125定向凝固镍基高温合金熔体超温处理中的弛豫现象,结果表明:DZ125合金熔体超温处理中存在的弛豫现象对凝固组织有明显影响.当恒温静置时间小于30 min时,枝晶间距,偏析比,γ′相和γ+γ′共晶相的形貌及大小随恒温静置时间的增加均无明显变化.然而,进一步延长熔体恒温静置时间至60 min,枝晶间距增大,偏析加重,γ+γ′共晶相明显增......
不同气氛激光立体成形镍基高温合金Inconel 718的显微组织和力学性能刘奋成1,林鑫1,杨高林1,黄春平1,陈静1,黄卫东1(1.陕西省西安市西北工业大学凝固技术国家重点实验室)摘 要:在Ar气和空气环境中激光立体成形了Inconel 718镍基高温合金坯.显微组织观察,拉伸性能和高周疲劳性能测试结果表明:Ar气和空气环境中成形合金的沉积态和热处理态组织基本相同,沉积态组织为沿沉积方向连续生长的粗大柱状枝晶,组织细密,均匀;热处理后发生再结晶,柱状晶转变为等轴晶;2种气氛下成形件热处理后的静载拉伸性能满足锻......