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. BAE and GHOSH [11,12] experimentally investigated cavity growth in a superplastic flow of Al-Mg alloy and suggested an improved plasticity-based model. PATANKAR and JEN [13] investigated the effect... in a superplastic Al-Mg alloy: II. An improved plasticity based model [J]. Acta Materialia, 2002, 50: 1011-1029. [13] PATANKAR S N, JEN T M. Strain rate insensitive plasticity in aluminum alloy 5083 [J......
There are mainly TiC phase and Ni phase in alloy. The binder phase is a Ni solid solution consisting of Co, Mo, W, Ti and Ta etc. Since the lattice constant of Mo, W, Ti and Ta is larger than that of Ni (0.355.... [3] TOKUMOTO K, SHINOAKI H, KITADA T, SAKAGUCHI S. Microstructures and mechanical properties of Ti-M-TiC(M:Cr,Mo,W) sintered hard alloy[J]. Journal of the Japan Society of Powder and Powder......
better hydriding kinetics than that of the as-cast Mg3La alloy at room temperature. The kinetic curve could be well fitted by Avrami-Erofeev equation. Key words:hydrogen storage; magnesium based...Effect of ball milling on hydrogen storage of Mg3La alloy SUN Tai1,ZHU Min1,DONG Hanwu1,OUYANG Liuzhang1 (1.School of Mechanical Engineering, South China University of Technology, Guangzhou 510641......
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Trans. Nonferrous Met. Soc. China 22(2012) 2124-2130 Effect of vacuum degree in VIM furnace on mechanical properties of Ni-Fe-Cr based alloy Masoud MOSHTAGHI, Seied Mahdi ABBASI Materials... degree in vacuum induction melting (VIM) furnace on the mechanical properties of Ni-Fe-Cr based alloy, four samples were prepared under different conditions. The chemical analysis results show that under......
Ni-Cr-Al合金有序化早期原子尺度的模拟 褚忠1,李永胜1,王永欣1,卢艳丽1,陈铮1 (1.西北工业大学,凝固技术国家重点实验室,陕西,西安,710072) 摘要:基于三元体系的离散格点的微观相场模型,模拟研究温度1123 K时三元合金Ni-Cr-Al有序化早期过程,通过研究沉淀过程原子图像和序参数曲线的演化,发现低饱和度合金Ni-15at.%Cr-10.5at.%Al沉淀机制为非经典形核长大,沉淀过程包括D022有序相的形核长大,L12有序相的形核和D022有序相向L12有序相的转化3个阶段.由于Cr原子替代Al原子位置,在L12有序相内两种原子占位几率接近,形成Ni3(CrxAl1-x)结构的L12有序相,并且与D022有序相共存.高饱和度合金沉淀机制为等成分有序化和失稳分解混合机制,并且有序化和簇聚过程比低饱和度合金提前. 关键词:微观相场模型; Ni-Cr-Al......
alloy with superior mechanical properties can be produced by one pass FSP via dynamic recrystallization. Key words: magnesium based alloys; AZ61 alloy; friction stir processing; ultrafine-grained...×10-21δ m3/s for Al[19], the faster diffusion rate in the Mg alloys results in much faster grain growth rate during dynamic recrystallization process. However, based on the foregoing observations......
the growth of oxide layer and improves the oxidation resistance of the alloy. Key words: Ni3Al-Mo based alloy; Re element; isothermal oxidation 1 Introduction Excellent mechanical and oxidation resistance... more than 90% Ni element. The interface between diffusion layer and substrate in the alloy without Re is more bent than the alloys with Re element. Figure 7 presents the morphology of the substrate......
is the theory of the characteristic crystals and points out direction of alloy design. The theory has been successfully applied to Ag–Cu alloys [1, 2] and Au–Cu alloys [3–6] in FCC structure, Ti–Al... J. Cent. South Univ. (2018) 25: 1573-1581 DOI: https://doi.org/10.1007/s11771-018-3849-x Derivation and application of concentration formula of alloy genes of DO3-type in BCC alloy systems PENG......
