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为380~430℃. 关键词:Al-Zn-Mg-Cu合金; 均匀化; 高温拉伸; 高温冲击; 锻造温度; 热加工塑性; Al-Zn-Mg-Cu alloy; homogenization treatment; high temperature tensile; high temperature impact; forging temperature; hot-working plasticity......
周期性单胞复合材料有效弹性性能的边界力方法 黄富华1,杜善义1,梁军1 (1.哈尔滨工业大学,复合材料与结构研究所,哈尔滨,150001) 摘要:均匀化方法是一种适应于周期性构造复合材料有效性能预测的有效方法.然而均匀化方程数学表达形式复杂,均匀化方法很难直接应用通用有限元软件进行计算,因此本文中提出一种便于求解均匀化方程的边界力方法,利用高斯定理将原均匀化问题转化为普通的三维应力问题,给出了单胞中不同材料交界面上作用的面分布力形式.运用有限元软件求解了均匀化系数,预报了单向复合材料和三维四向编织复合材料的有效性能,计算结果与实验吻合很好. 关键词:均匀化方法; 边界力方法; 复合材料; 周期性单胞; 有效弹性性能; homogenization method; boundary force method; composite material; periodical unit......
be concluded that the better homogenizing annealing process are 663, 10 h for ZK20 and 693, 10 h for ZK20+0.5Nd. Key words:Mg alloy; ZK20 Mg alloy; homogenization annealing; Nd; extrusion; microstructure......
during homogenization. Furthermore, the Ce addition introduces changes in the precipitation process and consequently in the age-hardening behavior of the alloy. Microstructural measurements reveal...' precipitates increase when Ce content is from 0.2% to 0.4% (mass fraction). Key words: Al-Zn-Mg-Cu alloy; cerium; microstructure; homogenization; precipitation 1 Introduction Ultra-high strength Al-Zn-Mg-Cu......
homogenization ZUO Yu-ting, WANG Feng, XIONG Bai-qing, ZHANG Yong-an, ZHU Bao-hong, LIU Hong-wei, LI Zhi-hui (State Key Laboratory for Fabrication and Processing of Nonferrous Metals, General Research Institute For Nonferrous Metals, Beijing 100088, China) Abstract: Microstructural evolution of spray formed Al-9.97Zn-2.65Mg-1.94Cu-0.12%Zr alloy during homogenization was studied by using......
键词:稀土镁合金;均匀化;显微组织 中图分类号:TG 162.83 文献标识码:A Homogenization heat treatment of GWN751K magnesium alloy MA Ming-long, ZHANG Kui, LI Xing-gang, LI Yong-jun, ZHANG Kang (State... of the as-cast and homogenized GWN751K magnesium alloy were investigated by optical microscopy, scanning electron microscopy and hardness measurement. The two-step homogenization parameters were......
界附近富Gd区氧化形成的. 关键词:Mg-xGd-Zr合金;均匀化;第二相;稀土 中图分类号:TG166.4 文献标志码:A Microstructure of cubic-shaped phase in Mg-xGd-Zr alloys during homogenization ZHENG Wei-wen, LI Xing-gang...) Abstract: The microstructure evolution of Mg-xGd-Zr(x=1%, 2%, 3%, mole fraction) alloys as well as the micro- structure of the cubic-shaped phase before and after homogenization were investigated......
Trans. Nonferrous Met. Soc. China 26(2016) 607-619 Microstructural evolution of Mg, Ag and Zn micro-alloyed Al-Cu-Li alloy during homogenization Qing LIU1, Rui-hua ZHU1, Jin-feng LI1, Yong-lai CHEN2... ingot during two-step homogenization was examined in detail by optical microscopy (OM), differential scanning calorimetry (DSC), electron probe micro-analysis (EPMA) and X-ray diffraction (XRD) methods......
homogenization CHEN Yuqiang1, PAN Suping2, YI Danqing3, LIU Wenhui1, 4, CAI Zhihua1, 4, TANG Changping1, 4 (1. Hunan Provincial Key Laboratory of High Efficiency and Precision Machining of Difficult-to-cut...: The dissolution of non-equilibrium phase, element distribution characteristics and the second phase precipitation of 2E12 alloy ingot during homogenization were investigated by using scanning electron microscopy......