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Effects of Heating Rate on the Process Parameters of Superplastic Forming for Zr55Cu30Al10Ni5杨璠,SHI Tielin,廖广兰State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology摘 要:We investigated the effects of heating rate on the process parameters of superplastic forming for Zr55Cu30Al10Ni5......
Promotion mechanism of the pulse current on the superplastic deformation of AZ31 magnesium alloyChao LI 1,2) , Shaosong JIANG 1) , Kaifeng ZHANG 1) and Zhipeng ZHAO 1) 1) National Key Laboratory..., China摘 要:The effects of pulse current on the superplastic deformation of AZ31 magnesium alloy with different microstructures were examined. The results of TEM......
Effect of Post-Rolling after ECAP on Superplastic Behavior of Commercial Al-Mg Alloy Kyung-Tae Park1,Byung Du Ahn2,Hyun Soo2,Woo Kyeom Kim2,Dong Hyuk Shin2 (1.Division of Advanced Materials Science... by severe surface prominence and depression, (b) the strain rate sensitivity of 0.33, and (c) moderate high strain rate superplastic elongations. By contrast, that of the alloy processed by equal......
and development direction of superplastic magnesium alloys CHEN Zhen-hua, LIU Jun-wei, CHEN Ding, YAN Hong-ge (School of Materials Science and Engineering, Hunan University, Changsha 410082, China) Abstract: The active energy and constitutive equations of magnesium alloys formed under different conditions were reviewed. The superplastic characteristics of coarse and fine-grained magnesium alloys were......
不锈钢带拉矫过程变形行为的数值模拟研究孙朝阳1,张栋1,张清东1,李实2,蔡永跃2(1.北京市北京科技大学机械工程学院2.宁波宝新不锈钢有限公司,浙江宁波 315807)摘 要:建立了不锈钢拉伸弯曲矫直过程的有限元仿真模型,该模型针对不锈钢拉矫机辊组配置和旋转压下的特点,采用了窄条三维壳单元对带钢进行特征建模.为提高计算效率,带钢网格进行了局部细化.对304不锈钢典型规格带钢拉矫过程进行模拟,伸长率计算值与实测值吻合较好.对带钢拉矫过程特征位置点经过各辊组的应力应变分析表明:带钢伸长率主要由1号弯曲辊组提供,而......
. The results of tensile tests showed that the Mg-4Li-3(Al-Si) alloy exhibited the highest ultimate tensile strength (UTS) of 249 MPa but the lowest elongation of 6.3%. The Mg-12Li-3(Al-Si) alloy had the highest elongation of 26% but the lowest UTS of 173 MPa. The different mechanical properties were attributed to the different crystal structures of the three alloys and the precipitate with different......
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bending test without brittle fracture at room-temperature, the elongation ratio of spheroidized as-cast specimen is 15.7% while the tensile strength σb is 259.5MPa. The ingot is hot-forged at 850℃ to sheet... gradually during the bruising process.
Key words: Ni-graphite alloy; plastic deformation; fiber-like microstructure; elongation ratio
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Microstructural evolution during superplastic deformation of Ti-6Al-4V alloy
ZHAO Wen-juan1, DING Hua1, CAO Fu-rong1, HOU Hong-liang 2, LI Zhi-qiang2
(1. School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China;
2. Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China)
Abstract: Superplastic tensile tests were carried out for Ti-6Al-4V alloy......Ti-6Al-4V合金超塑性变形中的组织演变及变形机制
来源： 《中国有色金属学报2007年第12期》——赵文娟 丁桦 曹富荣 侯红亮 李志强
Influence of the Accumulative Roll Bonding Process Severity on the Microstructure and Superplastic Behaviour of 7075 Al AlloyP.Hidalgo-Manrique,A.Orozco-Caballero,C.M.Cepeda-Jiménez,O.A.Ruano,F.Carre... in the ARBed samples in the temperature range from 250 to 350 °C at intermediate and high strain rates is grain boundary sliding, the superplastic properties being determined by both......
