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. Strengthening mechanisms of Mg-Si alloys[J]. Acta Mater, 1996, 44: 4611-4618. [6] LU L, LAI M O, HOE M L. Formation of nanocrystalline Mg2Si and Mg2Si dispersion strengthened Mg-Al alloy... script type in Mg matrix, which can be confirmed by the binary phase diagram of Mg-Si (shown in Fig.4). The SEM micrographs of as-cast AZ31-0.5%Si alloy clearly present the Chinese script type Mg2Si......
Microstructure and Performances of Nanocrystalline Zinc-nickel Alloy Coatings LI Guang-yu1,NIU Li-yuan1,JIANG Zhong-hao1,LIAN Jian-she1 (1.The Key Lab of Automobile Materials, Ministry of Education, China, College of Materials Science and Engineering, Jilin University, Nanling Campus, Changchun, 130025, China) 摘要:Nanocrystalline zinc-nickel alloy coatings were deposited from an alkaline......
of β-Mg17Al12 phase in Mg-Al system alloy will suffer from softening and cannot act the effect of restraining grain boundaries slipping, which makes alloys have low creep resistance. In 1970s...-Al alloys. At the same time, Mg-Al alloy containing high content of Zn element possesses good castability and mechanical properties at ambient temperature[1-5]. In this work, in view of characteristic......
and diffused into the liquid metal to form alloy in NaCl-KCl-MgCl2 melt at 750 ℃. LIN and UAN[5] proposed the preparation of Mg-Li-Al-Zn master alloy in air by electrolytic diffusing method at 500 ℃. AZ91...-deposition is another traditional method to produce alloy by electroplating and electrowinning[8-10]. However there is no report on the Mg-Al, Mg-Zn and Mg-Al-Zn alloy preparation through co-deposition method......
Mg-Al水滑石的改性机理和吸附性能张伟,曾虹燕,杨永杰,肖华淼,魏英民,廖梦尘,徐圣湘潭大学化工学院摘 要:用硫酸铵对镁铝水滑石进行改性,研究了镁铝水滑石的溶解性及硫酸铵的改性机理.结果表明,镁铝水滑石在pH 1.0-11.0范围内呈现出完全溶解,部分溶解和基本不溶三种溶解特性.硫酸铵的改性即为镁铝水滑石的部分溶解过程,层板中镁以Mg2+形态进入溶液,导致羟基铝(Al(OH)63-)进入溶液形成Keggin结构(Al13聚集体),Al13聚集体附着在镁铝水滑石层板表面形成无定形Al(OH)3,从而阻止镁离子进一步溶出.改性镁铝水滑石对Pb2+的吸附率提高了18.3%,是比表面积的增加,化学键合及静电吸附能力的提升所致.关键词:无机非金属材料;镁铝水滑石;吸附;酸溶过程;......
and hot rolling, which have advantages over lower cost, higher strength and toughness in cast forms[4, 6]. HOMMA et al[9] reported that the extraordinary high strength extruded Mg-Gd-Y-Zn-Zr alloy... A, 2000, 278(1/2): 66-76. [16] LIANG S J, LIU Z Y, WANG E D. Microstructure and mechanical properties of Mg-Al-Zn alloy sheet fabricated by cold extrusion [J]. Mater Lett, 2008, 62(24): 4009-4011......
alloy of the AZ91 alloy (Fig.5(a)), and Mg3In, Mg17Al12 and Sn are the main microscopic components of the Mg-Zn-In-Sn alloy. It should be noted that the occurrence of Mg-In, Mg-Al and Sn phase... It is confirmed that the precipitates Al-Mn and Al-Zn in the AZ91 alloy (Figs.8(a) and (b)) and Al-Mn, Al-Zn and Zn-Sn in the Table 3 Elemental contents of Mg-Zn-In-Sn alloy with precipitate Mg-Zn......
T, Kamegawa A, et al. Grain size refinement in Mg-Al-based alloy by hydrogen treatment[J]. Journal of Alloys and Compounds, 2003, 356-357(11): 804-808. [3]Luo A, Renaud J, Nakatsugawa I, et al... Xiang-fa, BIAN Xiu-fang. Grain refinement of Mg-Al alloys with Al4C3-SiC/Al master alloy[J]. Materials Letters, 2004, 58(7-8): 1282-1287. [6]JIN Qing-lin, Eom J P, Lim Su-gun, et al. Grain refining......
, it is believed that β phase (Mg17Al12) will precipitate, resulting in a decrease of Al level in α phase. To conclude the result from the corrosion experiment for AM60 Mg alloy, ageing effect on corrosion shows... weakens the corrosion resistance. Therefore, the corrosion rate depends on the integrated influence of β barriers and the Al content in α matrix. For AM60 Mg alloy, the concentration of Al is about......
Alloy 20不锈钢薄板等离子弧焊接工艺研究赵斌,王宾宾,王小华中国船舶重工集团公司第七二五研究所摘 要:对Alloy 20不锈钢薄板进行了等离子弧焊接工艺试验研究.结果表明,采用等离子弧焊接方法,ERCr Ni Mo-3焊材及合理的焊接工艺参数,等离子弧焊接工艺可用于Alloy 20不锈钢薄板的焊接,焊接接头各项性能均能满足要求.关键词:Alloy 20;不锈钢薄板;等离子弧焊接;......