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foams by powder metallurgy route 图2 不同Mg含量的泡沫铝宏观照片(发泡温度为1 073 K) Fig.2 Macrographs of Al foams with different mass fractions of Mg at foaming temperature of 1 073 K: (a) Without Mg; (b...Mg粉添加量对泡沫铝发泡行为及泡沫稳定性的影响进行研究.结果表明:Mg粉的添加导致前驱体膨胀率的显著增大和泡沫体泡孔结构的均匀化；添加的Mg粉同空气雾化Al粉表面的Al2O3反应,生成同铝熔体有良好润湿性的MgAl2O4相,打破原有铝粉表面的氧化物结构,生成的MgAl2O4相均匀地分布于泡孔的布拉德边界和泡壁上；润湿性MgAl2O4相的出现增加熔体的表观黏度,大大减弱重力排液,毛细作用和气泡流动带......
Trans. Nonferrous Met. Soc. China 26(2016) 1176-1182 Low frequency damping behavior associated with sintering process in Al powder compact Gang-ling HAO, Xian-yu LI, Wei-guo WANG College of Physics... can be interpreted as the viscous sliding of grain boundaries. The similar phenomena are also found in the Mg green powder compact. Key words: Al powder compact; internal friction; sintering; grain......
School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China Received 8 May 2013; accepted 3 September 2013 Abstract: Consolidation of pure Al powder was conducted.... Key words: refinement; consolidation; equal channel angular pressing and torsion; Al powder 1 Introduction The mechanical properties of powder materials can be improved qualitatively when......
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images of Al-MWCNTs composite powders: Fig. 1(a) exhibits powder morphology before planetary milling, Fig. 1(b) shows its magnified image, Fig. 1(c) exhibits powder morphology after planetary milling... of MWCNTs inside soft aluminum powder. Figure 2 shows Raman spectra of initial MWCNTs, powder after milling and composite sheet, respectively. Al-MWCNTs composite sheet and powder exhibit two broad peaks......
pellets and Al(OH)3 powder (Tianjin Kermel Chemical Reagent Ltd., China) were dissolved in deionized water under the heating and stirring condition. And then the obtained solution was filtered twice... angle were measured and calculated. 1) Solid surface free energy As the particle size distribution of the powder may have an impact on the contact angle, the Bayer industrial Al(OH)3 powder was screened......
, 31(1): 9-17. [4]NI Guan-cao. Demands on iron powders for automobile P/M parts[J]. Powder Metallurgy Industry, 2003, 13(2): 26-28. (in Chinese) [5]Fujiki A, Kojima H, Maekawa Y, et al. Development of warm compacted P/M sprockets for automotive engines[J]. J Japan Soc Powder/Powder Metall, 2001, 48(5): 440-444. (in Japanese) [6]LI Yuan-yuan, NGAI Tungwai Leo, XIAO Zhi-yu, et al. Study......
. SHRIVASTAVA et al [28] fabricated Al6061-Al2O3 nanocomposites by a powder metallurgy route, followed by a solution heat treatment and aging. The results showed that the maximum tensile strength and elongation... fabricated by advanced powder metallurgy [J]. Advanced Engineering Materials, 2018, 20: 1701133. [8] AMOURI K, KAZEMI S, MOMENI A, KAZAZIC M. Microstructure and mechanical properties of Al-nano/micro SiC......
parts. AM opens a door for fast prototyping, great flexibility and customizing at low cost, driving weight and assembling reduction. Key words: automotive; powder metallurgy; lean alloy; Al alloy; Ti... in Table 3 [21]. Al alloys are used in various applications of automotive parts. For instance, cam caps have been produced and employed successfully since 1993 by metal powder products Co (MPP) and GKN......
