共搜索到16053条信息，每页显示10条信息，共1606页。用时：0小时0分0秒453毫秒
in Al-Mg and Al-Zn-Mg alloys 图4 Al3(Sc, Zr)粒子尺寸与强化机制关系 Fig. 4 Relationship between size of Al3(Sc, Zr) and strengthening mechanism 3.2 超塑机制 要获取结构超塑性,晶粒尺寸需小于15 μm.钪锆复合添加到铝合金后主要以两种相形式存在... Metallurgica Sinica, 2001, 37(7): 749-753. [13] KENDIG K L, MIRACLE D B. Strengthening mechanisms of an Al-Mg-Sc-Zr alloy[J]. Acta Materialia, 2002, 50: 4165-4175. [14] 黄宏锋, 姜 锋, 刘兴涛, 周 江......
18Ni马氏体时效钢强化方法概述 陈建刚1,张敬霖1,卢凤双1,张建福1,张建生1 (1.钢铁研究总院,北京,100081) 摘要:18Ni马氏体时效钢是以无碳(或超低碳)铁镍马氏体为基体的,主要是经时效产生时效强化的高强度钢.本文简要概述了18Ni马氏体时效钢的发展过程,介绍了固溶强化,相变强化,时效强化,细晶强化,形变强化方法和发展趋势. 关键词:马氏体时效钢; 强化方法; 固溶强化; 相变强化; 时效强化; 细晶强化; 形变强化; maraging steel; strengthening way; solution strengthening; transformation strengthening; aging strength-ening; fine grain strengthening; deformation strengthening; [全文内容正在添......
was investigated in air and 3.5 wt%NaCl solution. Epoxy coating as a new method was used to improve the corrosion fatigue property of the material.Results show that the fatigue limit(FL) of the coated specimens is higher than that of the uncoated specimens in3.5 wt% NaCl solution because of the strengthening and blocking functions of the epoxy coating. The FL of the coated specimens in 3.5 wt% NaCl solution......
J. Cent. South Univ. (2018) 25: 2537-2549 DOI: https://doi.org/10.1007/s11771-018-3934-1 Elasticity solution of laminated beams with temperature-dependent material properties under a combination... Abstract: An exact solution for simply-supported laminated beams with material properties variable with temperature under a combination of uniform thermo-load and mechanical loads was investigated......
Solid Solution Nitriding Technology of 15Cr-7.5Mn-2.6Mo Duplex Stainless Steel ZHENG Yang-zeng1,QIU Liang2,WANG Chun-Yu2,ZHAO Pin1,FU Rui-dong1 (1.Key Laboratory of Metastable Materials Science & Technology, Qinhuangdao, P.R. China;2.College of Materials Science & Engineering, Yanshan University, Qinhuangdao, P.R. China) 摘要:Solid solution nitriding technologies of 15Cr-7.5Mn-2.6Mo duplex......
Corrosion behavior of WE54 magnesium alloy in 3.5%NaCl solution LI Zhuo-qun(李卓群), SHAN Da-yong(单大勇), CHEN Rong-shi(陈荣石), KE Wei(柯 伟), HAN En-hou(韩恩厚) Environmental Corrosion Center, Institute... in 3.5%NaCl aqueous solution. The electrochemical study shows that the value of corrosion potential of WE54 magnesium was -1.8V(vs SCE). In the initial stage of immersion, a kind of visible thin film......
. 4 EPMA microstructure and element scanning distribution maps of solution treated Al-Zn-Mg-Cu alloy 图5 固溶态Al-Zn-Mg-Cu-Sc-Zr合金的显微组织和元素面扫描分布 Fig. 5 EPMA microstructure and element scanning distribution maps of solution treated Al-Zn-Mg-Cu-Sc-Zr alloy 固溶态合金的TEM显微组织如图6所示.对比图3可知,固溶态合金内位错亚结构减少(图6(a)和(b),说明挤压合金在固溶处理中发生了一定的静态软化,但低钪合金内仍保留一定的亚晶结构；经放大观察可以发现,晶内和晶界均存在Al3(Sc1-xZrx)粒子,且该粒子强烈钉扎晶界/亚晶界(见图6(c......
systems is also very important. Aluminum and its alloys can be strengthened by precipitation strengthening heat treatment. The precipitation strengthening consists of three stages: solution heat treatment... conditions in terms of electrochemistry in relation to solution treatment, quenching and artificial aging treatment have been established in order to optimize the precipitation strengthening conditions......
railway track strengthening technical solution[J]. Railway Engineering,2012(6): 136-138. [6] 杨德修. 重载铁路运输轨道结构面临的主要问题及强化措施[J]. 铁道标准设计, 2005(12): 10-12. YANG Dexiu. The major issues on the heavy-haul...横向振动容许极限车速分别提高了18.7%,24.3%,26.6%和28.0%.当K2＞120 MN/m时提升幅度较小. 表3 扣件强化条件下FTT系统横向振动稳定性计算结果 Table 3 Calculation results of lateral vibration stability of FTT system under fastener strengthening 为分析扣件强化对货物......
Influence of Sc on high temperature strengthening behavior of Ti-6Al-4V alloy LIU Hui-qun(刘会群)1, YI Dan-qing(易丹青)1, WANG Wei-qi(王韦琪)2, WANG Li-ping(王立平)2, LIAN Cai-hao(廉才浩)1 1. School... of alloys increases with increasing Sc content after deformation at 850 ℃, however, there is no obvious strengthening of Sc when the alloys are deformed at 1 000 ℃. Sc exists as Sc2O3 forms by internal......
