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Influence of Cu addition on microstructure and hardness of near-eutectic Al-Si-xCu-alloys Muzaffer ZEREN, Erdem KARAKULAK, Serap G?M?? The Department of Metallurgical & Materials Engineering, Kocaeli University, Kocaeli 41380, Turkey Received 23 September 2010; accepted 10 January 2011 Abstract: The influence of Cu content on the microstructure and hardness of near-eutectic Al-Si-xCu (x......
to grain size show that yield strength significantly decreases with grain size increasing, while strain hardening exponent and micro hardness increase very sharply. Further, the grain size vs strain rate and change in Vickers micro hardness according to the various strain rates show that grain size and micro hardness decrease with strain rate increasing. Key words: magnesium alloy; refinement......
Effects of annealing temperature on microstructure and hardness of (Cu60Zr30Ti10)98Y2 bulk metallic glass查桂兰,章爱生School of Materials Science and Engineering,Nanchang University摘 要:(Cu60Zr30Ti10)98Y2 bulk metallic glass(Φ4 mm×70 mm) was obtained successfully by copper mould cooling and spraying-casting,and some samples were isothermally annealed......
Effects of annealing temperature on microstructure and hardness of (Cu60Zr30Ti10)98Y2 bulk metallic glass查桂兰,章爱生School of Materials Science and Engineering,Nanchang University摘 要:(Cu60Zr30Ti10)98Y2 bulk metallic glass(Φ4 mm×70 mm) was obtained successfully by copper mould cooling and spraying-casting,and some samples were isothermally annealed......
Effect of annealing on the microstructures and Vickers hardness at room temperature of intermetallics in Mo-Si systemYANG Haibo;LI Wei;SHAN Aidang;WU Jiansheng Key Laboratory of Ministry of Education...;正> The microstructures and Vickers hardness at room temperature of arc-melting processed intermetallics ofMo5Si3-MoSi2 hypoeutectic alloy and hypereutectic alloy annealed at 1200℃ for different......
Dendritic Growth, Eutectic Features and Their Effects on Hardness of a Ternary Sn–Zn–Cu Solder AlloyBismarck Luiz Silva1,Rodrigo Valenzuela Reyes2,Amauri Garcia3,Jos Eduardo Spinelli21. Department...(v), macrosegregation and hardness. Such interrelations are interesting for both industry and academy since they represent a tool permitting the preprogramming of final properties based on the design......
J. Cent. South Univ. (2019) 26: 2634-2642 DOI: https://doi.org/10.1007/s11771-019-4200-x Effect of composition and aging time on hardness and wear behavior of Cu-Ni-Sn spinodal alloy S. ILANGOVAN.... GOKULACHANDRAN. Effect of composition and aging time on hardness and wear behavior of Cu-Ni-Sn spinodal alloy [J]. Journal of Central South University, 2019, 26(10): 2634-2642. DOI: https://doi.org......
Influence of Ru on Solidification Behavior, Microstructure and Hardness of Re-free Ni-based Equiaxed Superalloys with High Cr ContentYingshuang Guan1,2,Enze Liu2,Xiurong Guan1,Zhi Zheng21. School...">The effect of Ru addition on solidification behavior, microstructure and hardness of Re-free Ni-based equiaxed superalloys with high Cr content has been investigated. With the increase of Ru, the solidus......
155O轧机高难度大型支承辊制造技术的开发 沈才平1,蒋梦龙1 (1.上海重型机器厂,200245) 摘要:叙述了宝钢1550轧机大型支承辊的制造难点,所采取的技术对策及最后的制造质量.通过相应的基础研究和模拟试验,上重厂已生产出了满足严格技术要求的这种大型支承辊. 关键词:大型支承辊辊身硬度硬度均匀性淬硬层深度残余应力70Cr3NiMo; Large Scale Back Up Roll; Hardness of Roll Body; Hardness Uniformity; Depth ofHardened Layer; Residual Stress; 70Cr3NiMo; [全文内容正在添加中] ......
in Al. Mainly due to the reduced TiC volume fraction with increasing depth, the hardness decreases with increasing depth in the laser clad layer with a maximum value of HV1400, about 4.5 times of the initial one. Key words: TC4 Ti alloy; TiC; laser cladding; segregation; hardness 1 Introduction Ti alloys are widely used in industries due to a good combination of their mechanical and chemical......
