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7xxx系铝合金氢脆的研究现状及发展趋势 任建平1,宋仁国1,张宇1,陈小明1 (1.浙江工业大学机械制造及自动化教育部重点实验室,杭州,310014) 摘要:全面评述了7xxx系铝合金氢脆(HE)问题的国内外研究现状,讨论了氢脆机理以及氢脆的影响因素,并介绍了几种重要的测试方法.针对目前研究工作中尚未从理论上揭示氢脆本质这一突出问题,指出了今后7xxx系铝合金氢脆问题的研究方向,同时结合前期的研究工作,提出了具体的相关建议. 关键词:7xxx系铝合金; 氢脆; 应力腐蚀开裂(SCC); 7xxx series aluminum alloys; hydrogen embrittlement; stress corrosion cracking(SCC); [全文内容正在添加中] ......
Micro-Crystalline Coatings of Co-Cr Dispersed with Y2O3 Deposited by Series Electro-Pulse Discharge 李正伟1,王德仁2,何业东2,高唯1,徐强2,齐慧滨2 (1.Department of Chemical and Material Engineering, The University of Auckland, New Zealand;2.Beijing Key Laboratory of Corrosion, Erosion and Surface Technology, University of Science and Technology Beijing, Beijing 100083, China) Abstract:A new technique-series......
Al含量对AZ系镁合金燃点的影响程春龙,乐启炽东北大学材料电磁过程研究教育部重点实验室摘 要:为了考察AZ系镁合金中不同Al含量对其初始熔化温度,燃点以及热解起燃时所处状态的影响,对镁合金初始熔化温度及燃点进行测试,采用FESEM扫描电镜对实验镁合金组织及燃烧前合金表面形貌进行观察,采用XRD对合金进行物相分析.结果表明,AZ系镁合金中Al含量较低时对燃点的影响表现为,随Al含量的增加低温熔点相β-Mg17Al12生成并逐渐增多,引起合金初始熔化温度的下降,降低了合金的燃点.同时,纯Mg及AZ31镁合金是在固态下起燃的; AZ61和AZ80镁合金是在半固态下起燃的,但AZ80的固相率更低.此外,Al含量的增加有利于合金起燃前表面膜的连续性与完整性,减缓合金燃点降低.关键词:燃点;AZ系镁......
Influence of Rare Earth Elements on Microstructure and Mechanical Properties of Mg-Li Alloys Liu Bin1,Niu Zhongyi1,Wang Tao1,Zhang Milin1 (1.College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;2.College of Materials Science and Engineering, Jiamusi University, Jiamusi 154007, China) Abstract:A series of α-based Mg-Li-Al-Zn-xRE alloys were......
; 1 Introduction At present, the AZ series of magnesium alloys have been widely applied in industrial production, but their mechanical properties... the mechanical properties and processing performances of the AZ series of magnesium alloys[1-4]. It is well known that grain refinement is an important method of elevating property and improving......
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J. Cent. South Univ. Technol. (2008) 15: 224-229 DOI: 10.1007/s11771-008-0043-6 Chaotic time series prediction for surrounding rock’s deformation of deep mine lanes in soft rock LI Xi-bing(李夕兵... in phase space on the deformation of mine lane were analyzed and the chaotic time series model to predict the surrounding rocks deformation of deep mine lane in soft rock by nonlinear theory and methods......
; 2. Yik Shing Tat Industrial Co., Ltd., Shenzhen 518101, China) Abstract: Sn-Ag-Cu series alloy is considered as the lead-free alternative to lead-tin alloys. A new method was introduced to measure.... Sn-3.5Ag-0.75Cu与Sn-3.0Ag-0.5Cu钎料蠕变压痕测试表明合金成分影响Sn-Ag-Cu系无铅钎料的力学性能. 关键词: 无铅钎料; 微压痕; 弹性模量; 蠕变速率敏感指数; Sn-Ag-Cu系 中图分类号: TG146.1 文献标识码: A Measurement of mechanical properties of Sn-Ag-Cu series lead-free......
to improving the corrosion resistance of magnesium alloy. Similarly, the controversial view on the role of the β phase (intermetallic compounds Mg17Al12) in the microstructure of AZ series magnesium... Comparison of corrosion behaviors of AZ31, AZ91, AM60 and ZK60 magnesium alloys CHENG Ying-liang(程英亮)1, QIN Ting-wei(秦廷伟)1, WANG Hui-min(王慧敏)1, ZHANG Zhao(张 昭)2 1. College of Materials Science......
; 1 Introduction The heat-treatable Al-Mg-Si-Cu(6000 series) alloys used... Gang, LIU Chun-ming, ZUO Liang. Phase constituents of some kinds of 6000 series aluminium alloys for automotive body sheets[J]. Journal of Northeastern University (Natural Science), 2005, 26(11......
