共搜索到69389条信息,每页显示10条信息,共6939页。用时:0小时0分0秒482毫秒
in the T8 aging, the strength of the T8-aged alloy is therefore enhanced. Key words: Al-Li alloy; mechanical property; microstructure 锂是密度最低的金属元素,在铝合金中每加入质量分数为1%的锂,可使铝合金密度降低3%,刚度提高6%.在航天领域,据推算,航天运载器每减...)).固溶后时效态呈带状晶粒组织,晶粒沿轧制拉长;而厚度方向晶粒尺寸非常小(图2(c)). 图1 1460铝锂合金T6及T8时效时力学性能随时效时间变化的关系曲线 Fig. 1 Mechanical properties of 1460 Al-Li alloy as function of T6 and T8 aging time 图2 1460铝锂合金金相照片......
evolution of reactive-sintered aluminum matrix composites [J]. Composites Science and Technology, 2008, 68: 2245-2253. 熔融铝对Al活化TiO2的反应自发渗透 Abdollah SABOORI1, Xiang CHEN1,2, Claudio BADINI1, Paolo... Institute of Aeronautical Materials, Beijing 100095, China 摘 要:研究Al活化TiO2(锐钛矿型)的反应自发渗透.为了进行活化,先将纯Al粉与TiO2混合,再将其压制成预制棒,然后密封于6060铝合金模具中.活化和渗透试验在6060铝合金浴中完成,时间1 h.作为对比,在相同的温度和时间条件下,在氩气保护环境中进行烧结试验. X射线衍射分析......
Fabrication and thermoelectric properties of β-FeSi2 prepared by mechanical alloying QIU Yue(邱 玥), SHEN Hong-lie(沈鸿烈), YIN Yu-gang(尹玉刚), WU Kai-hua(吴开华) College of Material Science... by mechanical alloying followed by sintering process. The influence of milling time and sintering conditions on alloying progress was studied by X-ray diffraction. The electrical and thermoelectric......
+0.5%CeO2 composite at different parts: (a) Top; (b) Bottom Table 3 Mechanical properties of composites 4 Conclusions In-situ TiB2 particles reinforced 2014 Al alloy composite is successfully prepared...] SADEGHIAN Z, LOTFI B, ENAYATI M H, BEISS P. Microstructural and mechanical evaluation of Al-TiB2 nanostructured composite fabricated by mechanical alloying [J]. Journal of Alloys and Compounds, 2011......
; mechanical property; electric conductivity Al-Zn-Mg-Cu系铝合金是应用最广泛的可热处理强化的高强铝合金,是航空航天工业...,热挤压态下合金的抗拉强度提高138 MPa,屈服强度提高151 MPa,而伸长率仍保持在18%.在Al-7.6Zn-2.1Mg-1.3Cu-0.15Zr合金中添加0.3% Sc,经固溶单级时效后,合金抗拉强度提高65 MPa,屈服强度提高67 MPa,而伸长率比未加Sc的基础合金的伸长率还高,达11.1%[9].目前,人们对含钪铝合金的研究主要集中在Al-Mg,Al-Li-Mg,Al-Cu-Mg和......
Mechanical alloying characteristic and thermal stability of Al78Fe20Zr2 amorphous powdersZHOU Shuzhua and WANG Wenwua, b a School of Metallurgical Engineering, Hunan University of Technology, Zhuzhou...="ChDivSummary">The powders of pure Al, Fe, and Zr for preparing Al78Fe20Zr2 were subject to a high-energy planetary ball milling.The microstructure evolution of the mixtures at the different intervals......
suitable for X-ray powder diffraction(XRD). The alloy base is substituted by α(Al), due to its little alloying element. 2.2 Potentiodynamic scanning curves of S, β and α(Al) Specimens for electrochemical..., the alloy base around β and S can be substituted by α(Al), due to its little alloying element. Fig.3 XRD patterns of ingot corresponding to chemical proportion of S(a) and β(b) The potentiodynamic......
Effect of alloying elements and processing parameters on the Portevin–Le Chatelier effect of Al–Mg alloysPeng-cheng Ma,Di Zhang,Lin-zhong Zhuang,Ji-shan ZhangState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing摘 要:The effects of alloying elements and processing parameters on the mechanical properties......
the strength of composites. Key words: 6066aluminum matrix alloy; SiC particles; surface treatment; mechanical properties 近年来,SiC增强Al基复合材料由于具有较高的比强度和比刚度,作为结构材料越来越受重视, 这些性能对质量要求高的部件,如航空,汽车及航海等方面的应用来说尤为重要....[10]傅敏士, 肖亚航. SiCp/Al复合材料的断裂行为[J].机械工程材料, 2001, 25(11): 17-18.FU Min-shi, XIAO Ya-hang. Fracture behavior of SiCp/Al matrix composites[J]. Materials for Mechanical Engineering, 2001, 25(11): 17-18.[11......
,因此研究铝酸钠溶液中氢氧化铝的溶解度与颗粒尺寸的关系是很有必要的.采用红外光谱仪,表面张力仪及接触角仪,测定和计算了Al(OH)3颗粒与铝酸钠溶液的固-液界面性质,并结合Ostwald熟化公式,对铝酸钠溶液中Al(OH)3溶解度与其颗粒尺寸之间的关系以及临界核尺寸的变化规律进行了分析.结果表明:三水铝石细粒子的溶解度大于粗粒子的溶解度,且其临界核尺寸随着碱浓度,苛性比及温度的升高而增大,细粒子的存在是限制晶种分解程度的重要因素. 关键词:铝酸钠溶液;Al(OH)3;界面性质;溶解度;临界核尺寸 (Edited by Hua YANG) Foundation item: Project (51274242) supported by the National Natural Science Foundation of China Corresponding author: Dong......