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钛合金片层组织两相区变形时的流动软化机理分析宋鸿武1,张士宏1,程明1,李臻熙2,曹春晓3,包春玲4(1.辽宁省沈阳市科学院金属研究所2.北京航空材料研究院3.北京航空材料研究院,北京1000954.沈阳铸造研究所钛合金部)摘 要:钛合金片层组织在两相区变形时流动应力随应变的增加普遍表现为快速硬化和持续软化的特征.为了研究该流动软化的机理,采用等温热压缩实验研究了TC11合金片层组织在温度890-995℃和应变速率0.01-10s-1范围内的热变形行为.理论计算表明α/β片层界面(α片层内孪晶界)产生的Hall-Petch强化效应远大于片层束集边界.TC11合金片层组织高温变形的流动软化机理可归结为硬滑移模式向软滑移模式转变导致Hall-Petch强化效应的减弱.关键词:TC11钛合金； 两......
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Laser rapid forming of low cost hydride-dehydride titanium alloy powder CHEN Jing(陈 静), ZHANG Feng-ying (张凤英), LIN Xin(林 鑫), TAN Hua(谭 华), HUANG Wei-dong(黄卫东) State Key Laboratory... forming; hydride-dehydride titanium alloy powder; rare earth Nd; microstructure; mechanical properties 1 Introduction Recent trend in the hot machining industry is to develop advanced net shape forming......
Hot deformation behavior and constitutive equations of titanium alloy Ti26 DU Yu(杜宇), QI Yun-lian(戚运莲), ZHAO Yong-qiang(赵永庆), WANG Rui-ning(王蕊宁), LIU Wei(刘伟), XI Zheng-ping(奚正平), HONG Quan.... Constitutive equations were formulated to describe the temperature dependence of the flow stress over a wide range of strain rates. Key words: Ti26 titanium alloy; hot deformation; activation energy......
J. Cent. South Univ. Technol. (2011) 18: 1795-1801 DOI: 10.1007/s11771-011-0904-2 Effects of sealing process on corrosion resistance and roughness of anodic films of titanium alloy Ti-10V-2Fe-3Al LIU... and Springer-Verlag Berlin Heidelberg 2011 Abstract: Anodic oxide films of titanium alloy Ti-10V-2Fe-3Al were sealed in calcium acetate solution. The morphology and composition of the sealed films were......
TC11钛合金盘模锻过程微观组织的数值模拟 陈慧琴1,李臻熙2,邓文斌1 (1.太原科技大学,太原,030024;2.北京航空材料研究院,北京,100095) 摘要:通过热力模拟压缩试验和定量金相组织测试数据,运用BP神经网络方法建立TC11钛合金等轴组织两相区变形的流变应力模型和α相组织演变模型.将所建立的流变应力模型和α相组织演变模型集成到MARC有限元分析软件中,实现TC11钛合金等轴组织两相区变形-传热-微观组织演变的多场耦合模拟技术.采用该技术模拟预测TC11钛合金盘模锻后的α相晶粒尺寸,实验验证结果表明预测误差在10%以内. 关键词:TC11钛合金; 模锻; 微观组织; BP神经网络; TC11 alloy; disk forging; microstructure; BP neural network; [全文内容正在添加中] ......
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Aging properties and microstructures of Ti-B20 titanium alloy GE Peng(葛 鹏)1,2, ZHAO Yong-qing(赵永庆)1, ZHOU Lian(周 廉)1 1. Northwest Institute for Non-ferrous Metal Research, Xi’an 710016, China; 2. School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China Received 28 July 2006; accepted 15 September 2006 Abstract: A new metastable beta titanium alloy of Ti......
Hot deformation behavior and microstructure evolution of TC4 titanium alloy SUN Sheng-di(孙圣迪), ZONG Ying-ying(宗影影), SHAN De-bin(单德彬), GUO Bin(郭 斌) School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China Received 23 October 2009; accepted 25 August 2010 Abstract: The hot deformation behavior of Ti-6Al-4V (TC4) titanium alloy was investigated......
of Materials Research, 1998, 13: 3372-3377. [14] OKABE T H, TAKASHI O, YOSHITAKA M. Titanium powder production by perform reduction process (PRP) [J]. Journal of Alloy sand Compounds, 2004, 364: 156-163...J. Cent. South Univ. (2012) 19: 2434-2439 DOI: 10.1007/s11771-012-1293-x Preparation of titanium powders by calciothermic reduction of titanium dioxide WAN He-li(万贺利)1,2,3,4, XU Bao-qiang(徐宝强......
