共搜索到522条信息,每页显示10条信息,共53页。用时:0小时0分0秒980毫秒
; 文章编号:1672-7207(2008)05-0968-07 Effect of retrogression processing on mechanical properties and intergranular corrosion of 7050 aluminum alloy YOU Jiang-hai1, 2, LI Peng-hui1, 2, LI Guo-feng1, 2.... School of Materials Science and Engineering, Central South University, Changsha 410083, China) Abstract: The effect of retrogression processing on the mechanical properties and intergranular corrosion......
析出物的大小和分布特征与T73状态类似,为呈断续,孤立分布的粗化平衡相. 关键词:7A55铝合金;回归处理;再时效处理;应力腐蚀;微观组织 中图分类号:TG146.2 文献标志码:A Optimum retrogression and reaging treatment of pre-stretched 7A55 aluminum...: The effects of retrogression and reaging (RRA) treatment on the microstructure, tensile properties and resistance to SCC of a pre-stretched 7A55 aluminum alloy plate were studied by tensile test, slow......
undergone retrogression and re-aging (RRA) were studied by tensile test, electron microscopy, and IGC test, and compared with those of T6 peak aging and T73 overaging treatments. The results show... the strength after T6 treatment. IGC depth is 16.8 μm, which is close to that of the T73 treatment. Key words: 7075 alloy; spray forming; retrogression and re-aging; intergranular corrosion; microstructure 7075铝......
Roman" w:st="on">{4 2 0} in Fig. 2(a). This indicates that GP zones and η′ particles predominate MPs at the dual- retrogression initial stage. After 30 min of dual- retrogression time... appear, as shown in Fig. 2(b), indicating that η phases have already formed. It agrees with the observation of SHA and CEREZO [12]. Further prolonging dual-retrogression time, diffraction spots......
Trans. Nonferrous Met. Soc. China 27(2017) 2357-2362 Properties of AA7075 aluminum alloy in aging and retrogression and reaging process Gokhan OZER, Ahmet KARAASLAN Department of Metallurgical...: A retrogression process was applied to AA7075 alloy at 180, 240 and 320 °C for 1, 30, 50, 70, 90 and 120 min. After the retrogression, aging treatment was reapplied with T6 conditions (120 °C, 24 h......
中图分类号:TG146.2 文献标识码:A 文章编号: 1672-7207(2005)02-0188-05 Effects of Different Retrogression and Reaging Heat Treatment on High-zinc Super-high Aluminum Alloy ZHANG Kun, LIU Zhi-yi, ZHENG Qing-chun, XU Xiao-chang, YE Cheng-wu (School of Materials Science and Engineering, Central South University, Changsha 410083, China) Abstract: The influence of different retrogression and reaging(RRA) heat......
are discussed. Key words: 7xxx aluminium alloys; Al-Zn-Mg-Cu; homogenisation; solution treatment; quenching; retrogression and re-ageing; strength; corrosion 1 Introduction High-strength age-hardened..., and 3) the ageing behaviour during one-, two- and three-step ageing treatments, including retrogression and re-ageing (RRA). In each case, the effects on both the microstructure and the resulting......
Fe-1C-xSi合金的液态结构 王浩伟1,王世晨2,滕新营1,刘含莲4,王焕荣3,叶以富5 (1.上海交通大学材料学院,上海,200030;2.中国石化新星公司德州石油机械厂,德州,253007;3.山东大学材料液态结构及其遗传性教育部重点实验室,济南,250061;4.山东大学机械学院,济南,250061;5.华东理工大学资源与环境工程学院,上海,200237) 摘要:利用高温液态X射线衍射研究了纯铁,Fe-1C和Fe-1Si合金在约1550℃及Fe-1C-xSi(质量分数,%)合金从熔点附近至1560℃的液态结构.结果表明:与纯铁的最近邻距离r1=0.259 nm和配位数N1=10......
液态模锻蒋鹏摘 要:<正> 液态模锻是将定量的熔化金属浇入凹模型腔内,在金属即将凝固或半凝固状态下(此时液,固两相共存)用冲头加压使其凝固,从而得到所需形状制件的加工方法.其工艺过程一般为:金属准备,金属熔化,模具清理,模具预热,喷涂润滑剂,浇注,合模,施压,保压,卸压,起模,顶出制件. 液态模锻是一种借鉴压力铸造和模锻工艺而发展起来的金属成形关键词:......
液态锡的工业应用Guna. S. Selvaduray,许敬文摘 要:<正> 至今为止,液态金属及合金只用在金属的萃取,精炼及配制合金方面.其主要目的就是准确控制金属成分,以保证固体金属的物理性质.就锡而论,它的一些主要用途为:镀锡,巴氏合金,锡基合金,铅字合金等,最近又用关键词:......