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真空感应熔炼Nb-16Si-22Ti-2Hf-2Cr-2Al合金的组织和性能贾丽娜1,高明1,盖京茹1,郑立静1,沙江波1,张虎1(1.北京市北京航空航天大学材料科学与工程学院)摘 要:用真空非自耗电弧熔炼制备了Nb-16Si-22Ti-2Hf-2Cr-2Al母合金锭,用Y2O3坩埚真空感应熔炼对母合金锭重熔,浇入温度梯度约为4℃/mm,底部有铜板的Y2O3模壳,制备出直径60mm,长170mm的合金锭.考察了合金性能与组织特征的关系,探讨了硅化物对室温抗拉强度和高温压缩性能的影响.结果表明,Nb-Si双相复合......
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Yun-rong, ZENG Qiang (Beijing Institute of Aeronautical Materials, Beijing 100095, China) Abstract: The microstructure of Ni3Al base superalloy with composition of Ni-10Co-7.1W-1.7Mo-0.5Nb-6.9Ta-7.9Re- 6.9Al-0.008C was investigated by SEM, EDS, XRD and quantitative metallographic method. The results show that the alloy consists of γ, γ′, eutectic (γ+γ′) and Re3W phases. Rhenium is a strong......
Trans. Nonferrous Met. Soc. China 20(2010) s906-s910 Rheological behavior, microstructure and hardness of A356 aluminum alloy in semisolid state using backward extrusion process S... alloy in the semi-solid state was investigated using backward extrusion process. Experiments were performed at 5 temperatures and 4 different wall thicknesses. Viscosities were determined using the force......
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-solid process; Al alloy 1 Introduction Semi-solid die cast process with various features [1-6] is a forming technology developed on the base of general molten metal die cast, and has gradually become... Mensuration and simulation of mold filling process in semi-solid die-cast of aluminum alloy YANG Yi-tao(杨弋涛), WANG Jian-fu(王建甫), ZHANG Heng-hua(张恒华) , SHAO Guang-jie(邵光杰) School of Materials......
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, 2006. LIU Wei-feng. Selective chlorination of controlled potential for separation of precious metals and base metals from the gold-antimony alloy[D]. Changsha: Central South University, 2006. [8] 刘伟锋... and recovery of base metals from rich antimony potential: China, 201710728018.7[P]. 2017-08-23. [9] LIU Wei-feng, RAO Shuai, WANG Wen-yao, YANG Tian-zu, CHEN Lin, ZHANG Du-chao. Selective leaching of cobalt......
nickel base alloy underhigh H2S and CO2 partial pressure CHEN Chang-feng1, FAN Cheng-wu2, ZHENG Shu-qi1, ZHANG Guo-an1, GE Lei1, CHEN Li-qiang1 (1. Department of Materials Science and Engineering... nickel base alloy under high H2S and CO2 partial pressure were investigated by X-ray photoelectron spectroscopy(XPS) as a function of depth. The effects of two type of corrosion environments......