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of intermetallic NiAl alloys GUO Jian-ting (Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China) Abstract: Many research progresses of the NiAl alloys were presented. The important conclusions mainly include the superplasticity and its mechanisms of the NiAl alloys, BDT and its mechanisms of the NiAl alloys, nanocrystalline NiAl and its nanocomposites, in-situ......
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particles of Ta-rich phase were also precipitated in NiAl matrix near the interface. Key words: NiAl alloy composite; Al2O3 fibre; diffusion bonding 1 Introduction NiAl alloys are attractive candidate... between BN and NiAl are. Since the boron solubility is very low in metals and alloys[14], no measurable B content was detected outside the BN by EELS in both the previous and the present studies. Thus......
evenly and compactly distributed on the surface of the carbon fiber in tubular form. The penetration depth of molten NiAl alloys depended on the reaction between the PyC and titanium. The impact fracture... layer at the interface results in infiltration of the molten NiAl alloys. Multi-layered (PyC/TiC/NiAl+TiC) coating enwraps around the carbon fiber evenly and compactly. 3) Blocked holes, inhomogeneous......
Influences of Yttrium on Microstructure and Mechanical Properties of NiAl -28Cr-5.5Mo-0.5Hf Alloy 郭建亭1,周继扬2,任维丽2 (1.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China... that the compressive strength and ducti lity of 0.05% Y(mass fraction)-containing alloy are superior to those of other alloys at the strain rate of 1.94×10-3 s-1 over a range from room t em perature to high......
Open-celled porous NiAl intermetallics prepared by replication of carbamide space-holders WU Jie, CUI Hong-zhi, CAO Li-li, GU Zheng-zheng School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266510, China Received 18 October 2010; accepted 16 December 2010 Abstract: Open-celled porous NiAl intermetallics with adjustable pore characteristics......
of Materials Science and Engineering, Central South University, Changsha 410083, China) Abstract: The solidification processes of Ni3Al and NiAl alloys were studied by molecular dynamics simulation...] 郭建亭, 张光业, 杜兴蒿. 定向凝固NiAl合金的超塑性行为[J]. 中国有色金属学报, 2004, 14(4): 521?527.GUO Jian-ting, ZHANG Guang-ye, DU Xing-hao. Investigation of superplasticity in directionally solidified NiAl alloys[J......
NiAl高温形状记忆合金的组分分析 李强1,周小燕2,张一玲3,宋锋兵2 (1.清华大学化学系,;2.武汉理工大学;3.清华大学材料系,) 摘要:采用提拉法无污染磁悬浮冷坩埚技术生长出NiAl合金,具有马氏体结构.NiAl合金的组分对其结构和相变温度有着重要的影响,然而其组分分析受Ni,Al难以分离的困挠.针对这一现状,对络合置换法,沉淀滴定法与电子探针(EPMA)仪器分析法进行了比较.综合分析表明,络合置换化学分析法对NiAl基合金的组分分析是一种简便,准确的分析方法. 关键词:NiAl; 高温形状记忆合金; 组分分析; [全文内容正在添加中] ......
FABRICATION OF NiAl INTERMETALLIC COMPOUND AND ITS ALLOYS BY SHS王为民,付正义,袁润章摘 要:<正>NiAl intermetallic compound and its alloysare synthesized by SHS.Affection of parameters on the Synthe-sis process is discussed.XRD,SEM and EPMA are used tostudy microstructure of the synthesized materials.Results showthat NiAl and its alloy can be synthesized......
comprises Ni2Al3 phase. However, when the time of oxidizing treatment increases to 50 h, the NiAl phase is formed. It is also found that the Ni2Al3 phase completely turns into NiAl phase after oxidizing treatment for 100 h and above. The NiAl coating shows excellent high temperature oxidation resistance when oxidation time is 250 h. Key words: copper; Ni2Al3 coating; high temperature oxidation resistance......
