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Trans. Nonferrous Met. Soc. China 28(2018) 1947-1957 Effect of hot deformation on α→β phase transformation in 47Zr-45Ti-5Al-3V alloy Yuan-biao TAN1,2, Li-yuan Ji2, Wen-chang LIU2, Song XIANG1, Fei... of strain rate and deformation temperature on the α→β phase transformation in 47Zr-45Ti-5Al-3V alloy with an initial widmanstatten α structure was investigated. At the deformation temperature of 550 °C......
47Zr-45Ti-5Al-3V合金的应力诱发马氏体转变行为谭元标1,2,刘文昌2,石维1,向嵩1,赵飞1,梁益龙11. 贵州大学贵州省材料结构与强度重点实验室2. 燕山大学亚稳材料制备技术与科学国家重点实验室摘 要:采用Gleeble 3500热模拟试验机和D/MAX-2500/PC型X射线衍射仪研究了亚稳态β相47Zr-45Ti-5Al-3V合金室温压缩变形过程中的应力诱发马氏体转变行为.结果表明,在压缩变形过程中,应力诱发马氏体的数量随应变速率和初始β相晶粒尺寸的降低而增加.随应变速率和初始β相晶粒尺寸的增加,应力诱发马氏体的触发应力逐渐增加,而抗压强度逐渐降低.加工硬化率随真应力的变化曲线可分为3个阶段,第2和第3阶段的加工硬化率随应变速率和初始β相晶粒尺寸的降低而增加.关键词......
47Zr-45Ti-5Al-3V合金高温流变行为及本构模型研究杨秋月1,向嵩1,谭元标1,刘文昌2,赵飞11. 贵州大学贵州省材料结构与强度重点实验室2. 燕山大学亚稳材料制备技术与科学国家重点实验室摘 要:采用Gleeble 3500热模拟试验机研究了47Zr-45Ti-5Al-3V合金在变形温度为650~850℃和应变速率为1×10-3~1×100s-1的热变形行为.结果表明变形温度和应变速率对47Zr-45Ti-5Al-3V合金的热变形行为有显著影响.在低温和高应变率下,在变形初期阶段合金的流变曲线表现出一个显著的应力降现象,应力降幅值随变形温度的增加和应变速率的降低而降低,合金仅发生动态回复.在高温和低应变率下,真应力-应变曲线表现出典型的动态再结晶特征,流变应力随应变的增加先增加到一个峰值......
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......
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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......
Trans. Nonferrous Met. Soc. China 22(2012) s656-s660 Microforming of superplastic 5083 aluminum alloy Md. Abu Mowazzem HOSSAIN1, Sung-Tae HONG1, Kyu-Yeol PARK1, Young-Sang NA2 1. School of Mechanical...: The mechanical behavior of superplastic 5083 aluminum alloy during microforming process was investigated by finite element analysis. A micro V-groove die was modeled to analyze the effects of forming......