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Li含量对Al-Li合金在酸性NaCl水溶液中腐蚀行为的影响王赫男,刘春忠,鲁玲,栗仁山,林地沈阳航空航天大学摘 要:真空熔炼制备1%和2%(质量分数)Li的Al-Li二元模型合金,研究Li含量对其在0.1mol/L NaCl+0.01mol/L酸性水溶液中电化学腐蚀行为的影响.采用自腐蚀电位和电化学阻抗(EIS)评价纯Al,Al-1Li和Al-2Li合金的耐蚀性能,结合X射线光电子能谱(XPS)和Mott-Schottky(M-S)曲线对3种试样表面腐蚀产物膜成分和半导体特征进行分析.结果表明:1%和2%Li使纯Al自腐蚀电位负移的同时,耐蚀性有所提高.合金元素Li参与腐蚀产物膜的形成,以Li2O的形式掺杂于Al2O3为主要成分的腐蚀产物膜中,没有改变腐蚀产物膜的n型半导体特征;但Li2O掺杂引起膜......
；机械热处理；粒子激发形核；双级过时效；预变形 中图分类号:TG 166.3 文献标识码: A 1Grain refinement of AA2195 Al-Li alloy by pre-deformation and overaging 2ZHANG Xin-ming, LIU Ying... refinement of AA2195 Al-Li alloy in thermo-mechanical processing (TMP) were investigated by means of optical microscopy (OM) and scanning electron microscopy (SEM). The results show that the pre......
Al-Cu-Li-X alloy ZHANG Jian1, ZHU Rui-hua1, LI Jin-feng1, MA Yun-long2, LIU De-bo2, ZHENG Zi-qiao1 (1. School of Materials Science and Engineering, Central South University, Changsha 410083, China; 2... ultra-high strength Al-Cu-Li-X alloy were investigated. The result shows that, as solution-treated for 40 min at 500-540 ℃, the strength of the aged alloy increases firstly then keeps a relatively same......
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Al-Li合金弯曲过程中微观组织结构演变与应变集中的DIC/EBSD耦合分析(英文)金晓1,2,张国栋1,薛飞1,赵彦芬1,柳文波2,31. 苏州热工研究院有限公司2. 清华大学3. 西安交通大学陕西省先进核能技术重点实验室摘 要:通过扫描电镜(SEM),电子背散射(EBSD)和数字图像相关方法...晶界(SAGBs),而裂纹沿小角晶界富集的地方进行扩展所需的能量相对是最小的.关键词:Al-Li合金;变形;微观结构;断裂;......
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两种新颖的Al-Li合金A.P.Divecha,谢燮揆摘 要:<正> 铝内加锂能降低密度和提高弹性模量,可制成一种强度高,重量轻的合金.实际上,稍微改变Al-Li合金成分还能实现超塑性成形.几年前,美国海军已开始执行一个集中开发合金的计划.特别是海军,海空系统指挥部(NAVAIR)已执行一项主要生产厂,制造厂,关键词:......
; 文献标识码:A Heat resistant properties of 2197 Al-Li alloy WEI Xiu-yu, ZHENG Zi-qiao, LI Shi-chen, CHEN Qiu-ni (School of Materials Science and Engineering, Central South University, Changsha 410083..., the mechanical properties of 2197 alloy decrease rapidly due to the dissolution of θ′ phase and rapid coarsening of T1 phase at these temperatures. Key words: 2197 Al-Li alloy; thermal exposure; heat......
Al-Li合金分级时效的微观相场模拟 李永胜1,徐国栋1,陈铮1 (1.西北工业大学,陕西,西安,710072) 摘要:基于离散格点形式的微观相场动力学扩散方程,以Al-10at%Li合金为对象,对3种不同的时效工艺进行计算模拟.结果表明,对于该合金,采用137℃预时效+190℃终时效工艺比另2种时效工艺获得的组织更均匀,颗粒更细化,弥散度更高.Al-10at%Li合金的单级时效和分级时效的沉淀相δ''(Al3Li)由失稳分解+形核长大的混合方式形成.分级时效可以有效地提高有序相的体积分数和颗粒密度. 关键词:Al-Li合金; 时效; 模拟; 形核机制; [全文内容正在添加中] ......
refinement of 01420 Al-Li alloy YE Ling-ying, ZHANG Xin-ming, ZHENG Da-wei (School of Materials Science and Engineering, Central South University, Changsha 410083, China) Abstract: Fine grained 01420 Al-Li... with the increasing preheating time but grows a little in 8 h. The proper pre-heating schedule is at 400 ℃ for 4-8 h. Key words: 001420 Al-Li alloy; thermo-mechanical processing; second phase particle......
