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;正>In the present work,the dispersion casting of Y2O3 particles in aluminum-copper alloy was investigated in terms of microstructural changes with respect to Cu contents of 20 (hypo),33 (eutectic... was employed.In case of Al-20 wt pct Cu alloy (hypoeutectic),SEM images revealed that primary Al was grown up in the beginning.After that,eutectic phase with well dispersed ceramic particles was formed.In case......
eutectic alloy; coating; magnesium; hardness; wear resistance; rapid solidification... University of Science and Technology,Qingdao 266590, China)Abstract:In order to improve the surface hardness and wear resistance of magnesium, Al-13%Si (mass fraction) alloy coating was deposited......
a little below 530 ℃. The reasonable homogenization treatment process of the alloy is (490 ℃, 16 h) +(520 ℃, 16 h). Key words: heat-resistance aluminum alloy; homogenization treatment; eutectic 2D70铝合金为高纯... aluminum alloy LI Pei-yue1, XIONG Bai-qing1, ZHANG Yong-an1, LI Zhi-hui1,WANG Guo-jun1, 2, WANG Feng1, ZHU Bao-hong1 (1. State Key Laboratory of Nonferrous Metals and Processes, General Research......
Bi对AZ80镁合金凝固行为及显微组织的影响王亚霄1,付俊伟1,王晶2,罗天骄1,董旭光2,杨院生2(1.辽宁省沈阳市科学院金属研究所2.东北大学 冶金与材料学院,沈阳110006)摘 要:采用加热-激冷方法和OM,SEM,XRD,DSC等分析手段,研究了AZ80-Bi镁合金的凝固行为,分析了合金的凝固组织特征及其演变过程,阐明了合金的凝固序列.AZ80-2%Bi(质量分数)合金的铸态显微组织由α-Mg,β-Mg17Al12和Mg3Bi2相组成,其中Mg3Bi2相以片状和颗粒状两种形态存在.将2%Bi加入AZ8......
was an effective modifying agent for the eutectic Si of ADC12 alloy,when 1.0 wt.%- 1.5 wt.% Sm was added to the alloy,the coarse acicular eutectic Si was modified into fine particle or short rod...Modification of eutectic silicon and β-Al5FeSi phases in as-cast ADC12 alloys by using samarium addition饶远生1,闫洪1,胡志1,21. Institute of Advanced Forming,Nanchang University2. Jiangxi Key Laboratory......
Mechanical behaviors of NiAl-Cr(Mo)-based near eutectic alloy with Ti, Hf, Nb and W additions TANG Lin-zhi(汤林志), ZHANG Zhi-gang(张志刚), LI Shu-suo(李树索), GONG Sheng-kai(宫声凯) School... of a directionally solidified NiAl/Cr(Mo) eutectic alloy [J]. Journal of Alloys and Compounds, 2008, 463(2): 263-270. [5] CUI C Y, GUO J T. Investigation on microstructure and mechanical property......
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激光快速熔凝Ni-Sn共晶合金的组织演变曹永青1,林鑫1,汪志太1,杨海欧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:采用Ni 28%Sn,Ni 30%Sn,Ni 33%Sn和Ni-35%Sn(质量分数)共4种成分的亚共晶和过共晶合金,考察了Ni Sn共晶合金在激光快速熔凝过程中的组织演化过程.当激光扫描速率较低时,Ni 28%Sn亚共晶合金和Ni-35%Sn过共晶合金的熔凝组织主要由细化的初生枝晶(亚共晶合金为α-Ni相,过共晶合金为Ni3Sn相)和枝晶间共晶(α-Ni+Ni3S......
by OM, XRD, SEM and EDS. The temperature of pressure infiltration was reduced by using Al-Si eutectic alloy instead of pure Al, which can effectively decrease non-diffusion reaction between liquid Al... that the prepared Ti-Al complex possesses a superior deformation capability.Key words:pressure infiltration; Ti-Al complex; Al-Si eutectic alloy; microstructure......
of metal-gas eutectic method (GASAR), porous Cu-Mn alloy with oriented pores was fabricated successfully. The variation of pore structure was studied by experiments. The results show that the pore... Influence of solidification mode on pore structure of directionally solidified porous Cu-Mn alloy JIANG Guang-rui, LI Yan-xiang, LIU Yuan Key Laboratory for Advanced Manufacturing by Materials......