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on the quasi-eutectic theory, for the Al-Si series alloys, the eutectic composition inevitably shifts to higher silicon content by fast cooling. Therefore, it is not surprised that ADC12 aluminum..., YAN Hong. Effects of rare earth Er additions on microstructure development and mechanical properties of die-cast ADC12 aluminum alloy [J]. Jounal of Alloys and Compunds, 2012, 538: 21-27. [8] WANG Zhen......
Trans. Nonferrous Met. Soc. China 20(2010) s744-s748 Microstructure of semi-solid ADC12 aluminum alloy adopting new SIMA method WANG Zhen-yu(王振宇), JI Ze-sheng(吉泽升), SUN Li-xin(孙丽鑫... microstructure of ADC12 aluminum alloy containing spherical solid particles was studied. A new strain-induced melt activation (SIMA) process was proposed. In the treatment, chips were cut from ADC12......
, the GISS process can give improved properties such as decreased porosity and increased microstructure uniformity. Key words: ADC12 aluminum alloys; semi-solid die casting; gas induced semi-solid (GISS... in the semi-solid die casting with a rheocasting process[7-12]. However, most work have used the A356, A357, and ADC10 aluminum alloys. Despite ADC12 is used widely in the die casting industry, no complete......
treatment time and mechanical properties 图11 不同固溶时间后ADC12铝合金的断口形貌 Fig. 11 Fracture morphologies of ADC12 aluminum alloys after different solution time 图11所示为挤压铸造态和不同时间固溶态合金后的断口形貌.图11(a)所示为挤压铸造态合...织的割裂作用,使材料的力学性能降低尤其对材料塑性降低更为明显. 图2 ADC12铝合金的DSC曲线 Fig. 2 DSC curve of ADC12 aluminum alloy 图3 挤压铸造态合金的显微组织 Fig. 3 Microstructure of squeeze casting alloy 2.2 固溶处理对显微组织影......
and mechanical properties of super slow speed die castings of ADC12 aluminum alloy[J]. Special Casting & Nonferrous Alloys, 2008, 28(9): 693-695. [9] 纪莲清, 熊守美, 村上正幸, 等. 浇注温度对ADC12铝合金超低速压铸件组织性能的影响[J]. 特种...:A 文章编号:1672-7207(2010)03-0977-05 Microstructure and mechanical properties of ADC12 aluminum alloy under super slow speed die castings with low shot speed......
, new energy vehicles have become the mainstream of the automotive industry. In order to achieve lightweight, most new energy automobile parts are manufactured by using aluminum alloys [1]. However, pure aluminum alloys sometimes do not meet the performance requirements fully. At this time, aluminum matrix composites with good performance can come in handy [2-4]. As an important member of the nano......
Precipitate-Accommodated Plasma Nitriding for Aluminum Alloys Patama Visittipitukul1,Hideyuki Kuwahara2,Tatsuhiko Aizawa3 (1.Department of Metallurgical Engineering, Chulalongkorn University... the strength and wear resistance of aluminum alloy parts in automotives. Long duration time as well as long pre-sputtering time are required for plasma nitriding of aluminum or its alloys only......
] WANG S Z, JI Z S, SUGIYAMA S, YANAGIMOTO J. Formation and growth mechanism of globular crystal of ADC12 aluminum alloy by near-liquidus squeeze casting[J]. Advances in Mechanical Engineering, 2014, 6...文章编号:1004-0609(2015)06-1428-07 近液相线挤压铸造工艺对ADC12铝合金支架显微组织和力学性能的影响 王绍著1,赵 密1,胡茂良1,吉泽升1,李 欣2,王云龙2,Sumio SUGIYAMA3, Jun YANAGIMOTO3 (1. 哈尔滨理工大学 材料科学与工程学院,哈尔滨 150040; 2. 哈尔滨吉星机械工程有限公司,哈尔滨......
析有关磨损机理. 表1 不同Sr添加量的ADC12合金的性能 Table 1 Properties of ADC12 alloys with different Sr additions 2 结果与讨论 2.1 显微组织 图1所示为Sr添加量对ADC12铝合金显微组织的影响,组织中白色的为α(Al)相,深黑色的为共晶Si相,灰褐色的为富Fe相.从图...ADC12合金的显微组织 Fig. 1 Microstructures of ADC12 alloys with different additions of Sr Sr变质ADC12合金能使显微组织得以改善,力学性能显著提升,究其原因,可以从两方面来分析:其一,根据Hume-Rothery原理[12],当溶质和溶剂的原子半径相对差大于15%时,只能形成低固溶度的固溶体,故Sr原子......
and strontium (Sr) addition on the microstructure and mechanical properties of ADC12 alloys were investigated, and two-stage solution treatment was introduced. The results indicated that the addition of Sr obviously refined the microstructure of ADC12 alloys. When 0.05 wt% Sr was added into the alloy, the eutectic Si phase was fully modified into fine fibrous structure; α-Al and β-Al5FeSi phases were......