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热处理工艺T6I6对2195合金组织和性能的影响 刘岗1,于利军1,郑子樵1,魏修宇1,李世晨1 (1.中南大学材料科学与工程学院,湖南,长沙,410083) 摘要:研究了热处理工艺T6I6对2195Al-Li合金组织和性能的影响,结果表明:2195Al-Li合金的断裂韧性与析出相的密度,尺寸及分布有关,而以T1相的密度,尺寸和分布影响最大;T6I6热处理工艺抑制T1相在亚晶界析出并促进T1和θ''相在晶内细小弥散析出,从而使2195合金在强度没有降低的条件下相对T6工艺提高合金塑性及断裂韧性. 关键词:2195Al-Li合金; T6I6; 塑性; 断裂韧性; [全文内容正在添加中] ......
2195合金轧制板材的显微组织研究蒋呐西南铝业(集团)有限责任公司摘 要:采用金相,SEM和TEM并借助力学性能测试,对2195合金三种典型状态的轧制产品的显微组织与性能进行了分析.SEM及能谱分析发现,在所有状态的板材中,均存在粗大,不规则形状的Al 7 Cu 2Fe结晶相,所有的中间热处理工序均不能消除这种有害相.金相和TEM显示,热轧板的显微组织是以含细小多变化亚结构的纤维态组织为特征,冷轧板的显微组织则是以含高密度位错胞的扁平晶粒组织为特征.TEM观察表明,时效态产品中主要含弥散,片状T1(Al2 CuLi)相,并伴以少量片状(Al 2Cu)相;拉伸试验结果显示,近峰值时效的2195-T851薄板可获得理想的综合力学性能.本文结合生产条件对2195合金不同产品状态的显微组织的形成及其演变进行了......
aluminum alloys; 7××× series aluminum alloys; aluminum-lithium alloy; aluminum-based composite materials ...研究与应用[J]. 材料导报, 2002, 16(5): 20-23.HUANG Lan-ping, ZHENG Zi-qiao, LI Shi-chen, JIANG Na, FAN Yun-qiang, XIE Shao-jun. Study and application of aluminum-lithium alloy[J]. Materials Review, 2002, 16(5......
2195铝锂合金搅拌摩擦焊接头组织及性能束彪,国旭明,张春旭沈阳航空工业学院材料科学与工程学院摘 要:为了研究搅拌摩擦焊(FSW)对2195铝锂合金组织及性能的影响,对5mm薄板进行了不同工艺参数的搅拌摩擦焊接.显微组织分析及力学测试结果表明:合金经FSW后,接头组织由焊核区,热机影响区,热影响区三个明显不同的区域组成.当焊速不变,搅拌头转速ω在7001300r/min之间变化时,接头抗拉强度随转速ω增大而降低;搅拌头转速不变,焊速υ在60140mm.min-1之间变化时,接头抗拉强度随焊速υ增大而提高.当υ=140mm.min-1,ω=1000r/min时,焊接接头强度系数达到73%.焊后接头显微硬度发生了较大程度的软化.关键词:搅拌摩擦焊(FSW);焊接速率;旋转速率;显微组织;硬度......
含钪焊料对2195铝锂合金焊缝组织性能的影响 王永1,李彦利1,胡捷1,侯德龙1,李德富1 (1.北京有色金属研究总院加工工程研究中心,北京,100088) 摘要:采用设计的焊丝进行焊接2195铝锂合金试验及焊后热处理试验, 通过对焊态焊缝和热处理后的焊缝的拉伸性能,微观组织分析和研究, 分析了焊丝中钪的添加, 在2195铝锂合金焊缝形成Al3(Sc1-xZrx)和Al3Sc强化相, 可以有效的细化焊缝晶粒, 改进2195合金焊缝的组织结构, 降低焊接裂纹倾向性, 显著提高焊缝的强度. 关键词:铝锂合金; 焊接接头强度; 钪; [全文内容正在添加中] ......
2195铝锂合金的化学铣切工艺优化刘凤娟,陈永来,于峰,何仕桓,林军,姚草根航天材料及工艺研究所摘 要:在2种化学铣切(化铣)液(NaOH+Al3++Na2S+三乙醇胺和NaOH+Al3++Na2S2O4·5H2O)中对2195铝锂合金进行化铣加工,确定了较佳的化铣液,并利用正交试验对其配方进行优化;在优化化...高,试验合金的化铣速率增大,侧切率先增后降,化铣温度在85~95℃较适宜;在85℃优化化铣液中化铣至深度约4.3mm时,试验合金表面无裂纹,腐蚀凹坑等缺陷,在85~90℃化铣至深度约3.0mm时的拉伸性能与化铣前的相近.关键词:化学铣切;2195铝锂合金;化铣速率;表面粗糙度;力学性能;......
The Strengthening of Cu-15Ni-8Sn Alloy WANG Ming-Pu1,WANG Yan-hui1,HONG Bin1 (1.School of Material Science and Engineering, Central South University, Changsha China) 摘要:The microstructure, property and relation between them of Cu-15Ni-8Sn alloy are studied by means of TEM and the measurement of hardness. The results show that γ '' metastable phase strengthens alloy because of its ordering......
,Harbin Institute of Technology摘 要:The effect of ultrasound on heterogeneous nucleation in a tungsten inert gas(TIG) weld pool of 2195 Al–Li alloy has been.... The results suggest that ultrasound could promote heterogeneous nucleation in the TIG weld pool of 2195 Al–Li alloy. The grain around the fusion zone is changed from a column grain to an equiaxed grain after......
The Technological Improvements of Aluminum Alloy Coloring by Electrolysis LI Nai-jun1 (1.Teachers College, Shenyang University, Shenyang 110015, P. R. China) 摘要:The technological process of coloring golden-tawny on aluminum alloy by electrolysis was improved in this paper. The optimum composition of electrolyte was found, the conditions of deposition and anodic oxidation by electrolysis were......
Corrosion behavior of CuCrNiAl alloy in HCl solutions YU Cui-yan(于翠艳)1, CHANG Li-min (常立民)2, ZHOU Li-min(周利敏)3, LIN Hong-yan(林红岩)1 1. Department of Applied Technology, Daqing Petroleum Institute...> Abstract: The corrosion behavior of a CuCrNiAl alloy in HCl solutions was studied by means of metallograph, XRD, SEM/EDX and TEM methods. The results show that in low concentration of HCl solutions, Cu......
