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轧制加工低合金板钢表面边部裂纹机制研究徐震1,华蔚1,江来珠1(1.上海市宝钢股份有限公司)摘 要:通过"模铸+初轧"工艺轧制低合金钢锭时,钢板易在表面距边部100 mm左右易出现直线型裂纹,裂纹或深或浅,有规律,导致报废量大大增加,影响了正常生产.该类缺陷曾被认为是轧制缺陷,从宏观形貌及微观组织等多方面研究缺陷形成机制,判定源于钢锭表面内在和外在微裂纹缺陷,初轧轧制时轧件在受到拉应力最大的地方产生开裂,从而为产品质量改进提供了理论依据,通过采取有效的技术措施,大大减少了该类缺陷发生的几率. 关键......
HIP diffusion bonding of P/M titanium alloy Ti-6Al-4V and stainless steel 1Cr18Ni9Ti LANG Ze-bao(郎泽保), WANG Liang(王亮), ZHANG Xu-hu(张绪虎) Aerospace Research Institute of Materials and Processing...: The HIP diffusion bonding of P/M titanium alloy Ti-6Al-4V and stainless steel 1Cr18Ni9Ti using pure Ni as intermediate layer was studied. Bonding joint with complex bonding interface was obtained......
Electrochemical process of titanium extraction CH. RVS. NAGESH, C. S. RAMACHANDRAN Defence Metallurgical Research Laboratory, Hyderabad, A.P. India-500058 Received 20 November 2005; accepted 9...; Abstract: A wide variety of processes are being pursued by researchers for cost effective extraction of titanium metal. Electrochemical processes are promising due to simplicity and being less capital......
Formation of face-centered cubic titanium in laser surface re-melted commercially pure titanium plateZhuo Li,Xu Cheng,Jia Li,Huaming WangNational Engineering Laboratory of Additive Manufacturing for Large Metallic Components,School of Materials Science and Engineering,Beihang University摘 要:Micron-scale face-centered cubic titanium phase(named as δ phase......
. Microstructures in transition zone transform from the fine needle-like bainite in 300M steel to the lath tempered martensite in AerMet100 clad layer.Microstructures in heat affected zone also gradually change from... of clad layer and stable heat affected zone, show slightly inferior mechanical properties to 300M steel. Ductile fracture exists in AerMet100 clad layer while quasi-cleavage fracture occurs......
machine shaft from thermal breakdown. High temperature resistant materials such as stainless steel should be chosen as anvil plate due to higher temperature encountered during the FSW. All the welds... Microstructural zones and tensile characteristics of friction stir welded joint of TC4 titanium alloy LIU Hui-jie (刘会杰), ZHOU Li (周 利) State Key Laboratory of Advanced Welding Production......
-song, JI Shu-de, FANG Hong-yuan. Numerical simulation and welding stress and distortion control of titanium alloy thin plate [J]. Trans Nonferrous Met Soc China, 2005, 15(4): 101-104. [2] LIU Yong... Effect of temperature on vacuum hot bulge forming of BT20 titanium alloy cylindrical workpiece WANG Ming-wei(王明伟)1, 2, ZHANG Li-wen(张立文)1, 2, PEI Ji-bin(裴继斌)1, 2, LI Chen-hui(李辰辉)3, ZHANG Fan......
Numerical simulation of circular jet impinging on hot steel plateFengli Wang1), Mouwei Li1), Yanqiu Zhao2), and Fengfu Yin1)1) Mechanical Engineering School, University of Science and Technology... of an axisymmetric circular jet impinging on a hot 1Cr18Ni9Ti medium plate have been simulated numerically using computational fluid dynamic (CFD) code. The relation between flow field of jet......
] LI H P. High purity titanium [J]. Shanghai Steel Research, 2003(1): 60-61. (in Chinese) [20] LEONE O Q, KNUDSEN H, COUCH D E. High purity titanium electrowon from titanium tetrachloride [J]. JOM... Thermodynamic analysis of production of high purity titanium by thermal decomposition of titanium iodide CHEN Xiao-hu(陈肖虎)1, 2, WANG Hua(王 华)1, LIU Yi-min(刘义敏)2, FANG Min(方 敏)2 1......
J. Cent. South Univ. (2017) 24: 296-302 DOI: 10.1007/s11171-017-3430-7 Analysis of strain variation in cross shear zone of plate during snake hot rolling ZHANG Tao(张涛)1, 2, 3, WU Yun-xin(吴运新)1, 2, 3... strain of aluminum alloy plate during snake hot rolling, several coupled thermo-mechanical finite element models (FEM) are established. Effects of speed ratio and offset distance on strain distribution......