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)|(011)Fe3Al and [001]α-Fe(Al)|[100]Fe3Al. Based on this, a formation mechanism of the interface structure was elucidated.Key words:Fe3Al intermetallics; vacuum diffusion bonding; microstructure...Microstructure and composition characteristics of transition zone in diffusion bonding of Fe3Al intermetallics to Q235 low carbon steelWU Hui-qiang(吴会强)1, FENG Ji-cai(冯吉才)1, LI Ya-jiang(李亚江)2, WANG......
词:Nb-Al系; 金属间化合物; 复合材料; 高温结构材料 中图分类号:TF841.6 文献标志码:A Research progress of Nb-Al system intermetallics and composite LUO Min1, CHEN Huan-ming2, WANG Huai-chang1, HE Li-jun2... 750021, China) Abstract: The recent research progress and prospects of Nb-Al intermetallics compounds for structural applications were discussed. The processing and mechanical properties of the Nb-Al......
Experimental methods The nominal composition of the Ni3Al alloy is Ni-(7.5-8.5)Al-(10-14)Mo-(0.02-0.15)B (mass fraction, %). The main phases of matrix alloy are as follows: about 80%(volume fraction) γ′-Ni3(Al, Mo), about 20%(volume fraction) γ-Ni(Mo) supersaturated solid solution and <2%(volume fraction) boride. The dimensions of the test specimens are 50 mm×20 mm×1.7 mm. Before the corrosion test......
and Technology, Xuzhou 221116, China Received 21 February 2017; accepted 24 May 2017 Abstract: Porous FeAl-based intermetallics were fabricated by thermal explosion (TE) from Fe and Al powders. The effects of sintering temperature on phase constitution, pore structure and oxidation resistance of porous Fe-Al intermetallics were systematically investigated. Porous Fe-Al materials with high open porosity (65......
A novel heat-resistant Al–Si–Cu–Ni–Mg base material synergistically strengthened by Ni-rich intermetallics and nano-AlNp microskeletonsKaiqi Hu,Qingfei Xu,Xia Ma,Qianqian Sun,Tong Gao,Xiangfa LiuKey...(nano-AlNp) microskeletons were introduced into an Al–Si–Cu–Ni–Mg alloy by Al–8 AlN master alloy in which the nano-AlNp reinforcements connect with each other to form three-dimensional networks......
Ni-28.0mass%Al纳米复合镀层的氧化研究 王福会1,周月波1,彭晓1 (1.中国科学院金属研究所,金属腐蚀与防护国家重点实验室,沈阳,110016) 摘要:利用复合电镀技术,通过向电镀溶液中加入平均粒度为75 nm的Al粉的方法在Ni基材上制备了Ni-28.0mass%Al纳米复合涂层,XRD和TEM分析表明,Al纳米颗粒均匀分布在Ni纳米晶粒中.1050℃氧化实验表明:Ni-28.0 mass%Al纳米复合镀层的氧化速度明显低于单Ni镀层及Ni基材的,这是因为在氧化过程中Ni-Al纳米复合镀层热生长连续的Al2O3氧化膜. 关键词:共电沉积; 高温氧化; Ni-Al纳米复合涂层; [全文内容正在添加中] ......
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Microstructure-dependent oxidation behavior of Ni-Al single-crystal alloysJianlu Pei1,Yefan Li1,Chong Li1,Zumin Wang1,Yongchang Liu1,Huijun Li21. State Key Lab of Hydraulic Engineering Simulation...="ChDivSummary">The effect of the γ +γ two-phase structure on the oxidation behaviors of Ni-Al single-crystal alloys at 650℃ was investigated by scanning electron microscopy, transmission electron microscopy......
Sn-3.5Ag/Cu体系早期界面反应及凝固过冷行为周敏波1,李勋平1,马骁1,张新平1(1.广东省广州市华南理工大学材料科学与工程学院)摘 要:利用差示扫描量热分析法结合焊点回流过程,研究了无Pb钎料Sn-3.5Ag与Cu基底构成的Sn-3.5Ag/Cu体系模拟焊点中早期界面反应及焊点形成过程中钎料熔化和凝固特性.结果表明,加热过程中Cu向钎料合金侧的固态原子扩散导致界面生成低熔点Sn-Ag-Cu三元合金,使焊点界面在低于Sn-3.5Ag钎料熔点温度近4℃时即开始熔化;早期界面反应促使润湿过程提早发生并生成了......
Ni-Al喷涂层中温反应烧结的温度变化模型 刘瑞林1,邱长军1 (1.中南工学院,湖南衡阳 421001) 摘要:基于Ni-Al喷涂层反应烧结的特点,提出了涂层反应放热过程的温度变化模型及计算方法,研究了Ni-Al混合喷涂层(94%Ni+6%Al)在中温保护气氛下反应烧结的界面组织及反应区温度变化过程,计算表明:反应区存在非金属间化合物液相,同时由于Ni-Al在中温条件下发生反应并在局部形成高温,使涂层具有良好的力学性能. 关键词:反应烧结; 热喷涂; 温度模型; [全文内容正在添加中] ......