共搜索到15506条信息,每页显示10条信息,共1551页。用时:0小时0分2秒83毫秒
DOI:10.19476/j.ysxb.1004.0609.2019.07.06 去应力退火对薄壁钛管表面残余应力的影响 周大地1,曾卫东1,刘江林1,徐建伟1,席锦会2,李 辉2 (1. 西北工业大学 凝固技术国家重点实验室,西安 710072; 2. 西部钛业有限责任公司,西安 710201) 摘 要:在不同退火温度和保温时间下对冷轧TA18薄壁管进行真空去应力退火处理,通过X射线衍射分析了无缝管表面轴向残余应力在退火前后的变化规律.结果表明:冷轧TA18管外表面轴向保留了较大的残余压应力;经真空去应力退火处理后,残余应力有了大幅下降.其应力松弛随退火温度的提高,效......
......
were measured at different temperatures. The effects of temperature and content of metal Cu on the electrical conductivity were investigated especially. The results indicate that the metallic phase Cu distributes evenly in 10NiO-NiFe2O4 ceramic matrix. The mechanism of electrical conductivity of Cu/(10NiO-NiFe2O4) cermets obeys the rule of electrical mechanism of semiconductor, the electrical......
Electrical conductivity of Cu-Ag in situ filamentary composites NING Yuan-tao(宁远涛), ZHANG Xiao-hui(张晓辉), WU Yue-jun(吴跃军) Kunming Institute of Precious Metals, Kunming 650221, China Research 18...; Abstract: The electrical conductivity of Cu-10Ag in situ filamentary composite was studied during the deformation and annealing processes. The dependence of electrical resistivity......
that the precipitates are β-Ni3Si and δ-Ni2Si phases. Key words: Cu; Cu-Ni-Si alloy; dynamics; phase transformation; precipitation; electrical conductivity 1 Introduction Cu-Ni-Si alloys are used for electrical parts such as electrical connectors and lead-frames because of their high electrical conductivity and high strength[1]. The high strength is caused by nanometer-particle precipitates......
......
......
J. Cent. South Univ. Technol. (2008) 15: 819-823 DOI: 10.1007/s11771-008-0151-3 Electrical conductivity of (Na3AlF6-40%K3AlF6)-AlF3-Al2O3 melts HUANG You-guo(黄有国)1, 2, LAI Yan-qing(赖延清)1, TIAN...; Abstract: The effects of contents of AlF3 and Al2O3, and temperature on electrical conductivity of (Na3AlF6-40%K3AlF6)- AlF3-Al2O3 were studied......
Measurement of electrical conductivity of micron-scale metallic wires JU Bing-feng, JU Yang, M. SAKA Department of Nanomechanics, Graduate School of Engineering, Tohoku... show that the four-point AFM probe is mechanically flexible and robust. The four-point AFM probe technique is capable of measuring surface topography together with local electrical conductivity......
Electrical conductivity of Na3AlF6-AlF3-Al2O3-CaF2-LiF(NaCl)system electrolyte KAN Hong-min(阚洪敏), WANG Zhao-wen(王兆文), BAN Yun-gang(班允刚), SHI Zhong-ning(石忠宁), QIU Zhu-xian(邱竹贤) School...; Abstract: A PGSTAT 30 and a BOOSTER 20A were used to measure cell impedance. Electrical conductivity......