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文章编号:1004-0609(2009)11-1948-08 TiAl3对TiC粒子在铝基体中分布及α(Al)晶粒形核的影响 夏天东1, 2,丁万武1, 2,赵文军1, 2,王晓军1, 2,徐仰涛1, 2 (1. 兰州理工大学 甘肃省有色金属新材料省部共建国家重点实验室,兰州 730050; 2. 兰州理工大学 有色金属合金及加工教育部重点实验室,兰州 730050) 摘 要:研究TiC和TiAl3细化工业纯铝时TiAl3的存在对TiC在铝基体中分布及α(Al)晶粒形核的影响,分析Al-Ti-C晶粒细化机制.结果表明:TiC单独作为工业纯铝的晶粒细化剂时,大量TiC被α(Al)晶粒推向树枝晶的晶界处,从而限制了TiC的异质形核作用;当TiC和TiAl3共同作为晶粒细化剂时,在α(Al)晶粒内部出现了大量TiC粒子,大量的TiC粒子成为了α(Al)的结晶核心,并且在......
in the metal matrix. Previously, TOKUNAGA et al [4] have reported the improvement of yield strength of aluminum from 150 to 250 MPa by reinforcing fullerenes via severe plastic deformation. KHALID et al [5] has... particles (~1 μm in diameter) by planetary milling. Second, primarily ball-milled fullerenes are dispersed in aluminum powder via attrition milling. Finally, aluminum/fullerene composite powder......
J. Cent. South Univ. (2021) 28: 1195-1205 DOI: https://doi.org/10.1007/s11771-021-4669-y Microstructural evolution and mechanical properties of an ultrahigh-strength Al-Zn-Mg-Cu alloy via powder... of the Al-10Zn-3.5Mg-1.5Cu alloy after hot extrusion and subsequent heat treatment achieve 810 MPa, 770 MPa and 8%, respectively. Key words: powder metallurgy; Al-Zn-Mg-Cu alloy; ultrahigh strength; hot extrusion Cite......
Microdistortion behavior of Al alloy reinforced by SiCp LI Duo-sheng(李多生)1, 2, ZUO Dun-wen(左敦稳)2, ZHOU Xian-liang(周贤良)1, HUA Xiao-zhen(华小珍)1, CHEN Rong-fa(陈荣发)2, ZHAO Li-gang(赵礼刚)2 1. College...; Abstract: Al alloy reinforced with SiCp was fabricated by the method of pressureless infiltration. The effects of factors such as SiCp......
of the CNTs reinforced Cu and Al based composite materials in recent years was reviewed. Five main aspects including the pretreatment of CNTs, the preparation of CNTs-metal composite powder...强Cu基或Al基复合材料是未来铜材或铝材方面最具潜力的发展方向之一.在本研究中,综述了近几年在CNTs增强Cu基和Al基复合材料研究方面取得的进展,论述CNTs的预处理,CNTs-金属复合粉末的制备,CNTs-金属复合块体材料的制备,界面结合机制以及CNTs的强化机理5个主要方面. 关键词:碳纳米管;Cu基复合材料;Al基复合材料;制备方法;增强机理 中图分类号:TB333  ......
Trans. Nonferrous Met. Soc. China 30(2020) 1267-1276 TLP bonding of Ti-6Al-4V to Al 2024 using thermal spray Babbitt alloy interlayer H. NAEIMIAN, M. A. MOFID Department of Petroleum, Mining... strength of the joint reaches the high value of 57 MPa obtained at larger bonding time of 60 min. Key words: transient liquid phase; Al 2024 alloy; Ti-6Al-4V alloy; thermal spray; shear strength 1......
料的抗渗能力与堆积密度有关, 捣实状态下的抗渗能力比松散状态的好, 铝液能够使电解质向防渗料的渗透量增加, 在电解质中加入铝块后, 防渗料的抗渗能力减弱. 关键词: 铝电解槽; 干防渗料; 导热性; 抗渗性 中图分类号: TF821 文献标识码: A Thermal conduction and anti-penetration of dry barrier powder..., 816℃体积稳定. 表1 干防渗料的化学成分 Table 1 Chemical compositions of dry barrier powder materials (mass fraction, %) 刨炉材料是在电解槽上使用过1000多天的防渗料. 抗渗实验所用的电解质成分是: 工业用冰晶石和氧化铝, 分析纯氟化钠. 1.2 实验方法......
] For some alloys such as Ti-Ta alloy powder, it is very difficult to produce because of the segregation problem during melting [49, 50]. XIA et al [32] recently found that the biomedical Ti-30Ta alloy... was recently published by DASS et al [67]. Figure 8 Process flowchart (a), products at each step of Co-Cr-Mo alloy spherical powder production starting from low-value elemental powder (b)-(e) [51] Figure 9......
. Compared with aluminum substrate, the microhardness of MMC layer is improved significantly. Key words: Al matrix compound; laser deposition; coincident wire-powder feeding; microstructure 颗粒增强铝基复合材料拥有高比强... dispersing of SiC and WC powder in Al alloy[J]. Applied Surface Science, 2009, 255: 5584-5587. [15] SYED W U H, PINKERTON A J, LI L. A comparative study of wire feeding and powder feeding in direct diode......
investigated. It is found that the cell volume expansion of upon hydrogenation is obviously decreased after Al partial substitution for forNi,and a subsequent decrease in the pulverization of the alloy particlesis, which leads to the decrease of the rate of contact of the fresh alloy surface with alkaline electrolyte and the increase of the charge/discharge efficiency. Moreover, the occurrence of Al......