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diffraction(EBSD)and mechanical testing machine.The grain size and configuration of A286 alloy can hardly be changed during aging process.The initially equiaxial and twinned crystals are obvious when...Microstructure and properties after deformation and aging process of A286 superalloySi-Cheng Liu,Yun Gao,Zhong-Liang Lin,Shuang-Shuang Guo,Xiao-Bin Zhang,Xiao-Jian Yin摘 要:
实验室加速腐蚀环境中A286口盖锁的腐蚀行为赵连红,刘元海,王浩伟中国特种飞行器研究所结构腐蚀防护与控制航空科技重点实验室摘 要:对安装与未安装两种形式口盖锁进行了实验室加速腐蚀试验,通过蚀坑深度和力矩差(松脱力矩与拧紧力矩的差值)研究了A286口盖锁的腐蚀行为,分析了装配过程及装配应力对口盖锁腐蚀行为的影响.结果表明:安装口盖锁的腐蚀程度明显高于未安装口盖锁的;未安装口盖锁的主要腐蚀形式是接触腐蚀,而安装类口盖锁的主要腐蚀形式是接触腐蚀和应力腐蚀;应力腐蚀对口盖锁腐蚀的影响比接触腐蚀的更大.关键词:A286口盖锁;装配形式;应力腐蚀;接触腐蚀;......
固溶时效热处理对A286合金组织演变规律的影响姚志浩1,2,阮雅婷1,董建新1,张十庆3,张麦仓1,倪童伟1,秦琴11. 北京科技大学材料科学与工程学院2. 美国哥伦比亚大学3. 重庆材料研究院摘 要:对A286铁基高温合金进行固溶温度+时效两段式热处理工艺优化研究.采用固溶热处理制度为9301020℃/4...析出γ’强化相;随着时效时间延长,析出的γ’强化相发生粗化;合金时效γ’强化相粗化过程符合Ostwald熟化长大规律,计算值与实际值相关系数大于97%;同时,确定了最佳的热处理工艺制度.关键词:铁基A286高温合金;固溶时效处理;显微组织;力学性能;......
汽车用耐热紧固件团标的制定及A286合金螺栓的研制钱鹏1,陆恒昌2,袁峰11. 泛亚汽车技术中心有限公司2. 上海大学材料科学与工程学院摘 要:为了满足对汽车用耐热紧固件的需求,泛亚汽车技术中心有限公司等单位制定了2项团体标准T/CSAE 99-2019和T/CSAE 136-2020.团标中包含了紧固件用耐热材料的牌号和基本技术要求,耐热材料的应用等.通过全产业链协作,建立了"材料生产-紧固件制造-服役评价"的质保体系,研制了A286合金螺栓.结果表明:采用真空感应熔炼(VIM)+电渣重熔(ESR),并进行合理的覆膜处理,拉拔,热处理,试制的A286合金螺栓使用性能满足要求.A286合金螺栓的制造工艺为冶炼→开坯→热连轧→盘条酸洗→覆膜处理→拉丝→固溶处理→酸洗→轻拉拔→检测→冷镦→搓丝→时效→表面......
The Strengthening of Cu-15Ni-8Sn Alloy WANG Ming-Pu1,WANG Yan-hui1,HONG Bin1 (1.School of Material Science and Engineering, Central South University, Changsha China) 摘要:The microstructure, property and relation between them of Cu-15Ni-8Sn alloy are studied by means of TEM and the measurement of hardness. The results show that γ '' metastable phase strengthens alloy because of its ordering......
The Technological Improvements of Aluminum Alloy Coloring by Electrolysis LI Nai-jun1 (1.Teachers College, Shenyang University, Shenyang 110015, P. R. China) 摘要:The technological process of coloring golden-tawny on aluminum alloy by electrolysis was improved in this paper. The optimum composition of electrolyte was found, the conditions of deposition and anodic oxidation by electrolysis were......
Microstructure and Performances of Nanocrystalline Zinc-nickel Alloy Coatings LI Guang-yu1,NIU Li-yuan1,JIANG Zhong-hao1,LIAN Jian-she1 (1.The Key Lab of Automobile Materials, Ministry of Education, China, College of Materials Science and Engineering, Jilin University, Nanling Campus, Changchun, 130025, China) 摘要:Nanocrystalline zinc-nickel alloy coatings were deposited from an alkaline......
J. Cent. South Univ. (2020) 27: 1714-1728 DOI: https://doi.org/10.1007/s11771-020-4402-2 Evaluation of surface roughness and optimization of cutting parameters in turning of AA2024 alloy under... compositions of adhered materials. By changing dry and FM to MQL mode, dominant mechanism of tool wear in machining aluminum alloy was significantly decreased. Breakage wear that led to early failure......
Alloy 20不锈钢薄板等离子弧焊接工艺研究赵斌,王宾宾,王小华中国船舶重工集团公司第七二五研究所摘 要:对Alloy 20不锈钢薄板进行了等离子弧焊接工艺试验研究.结果表明,采用等离子弧焊接方法,ERCr Ni Mo-3焊材及合理的焊接工艺参数,等离子弧焊接工艺可用于Alloy 20不锈钢薄板的焊接,焊接接头各项性能均能满足要求.关键词:Alloy 20;不锈钢薄板;等离子弧焊接;......
)Abstract:Stainless die with micro-groove and micro-hole have been designed and manufactured, which has been used to study superplastic microforming of 2091Al-Li alloy by means of superplastic forming... micro-rib specimen, behavior of material could be understood well.Key words:superplasticity; microforming; extrusion; 2091Al-Li alloy......
