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and Engineering, Jilin University, Changchun 130022, China) Abstract: The thermodynamics equilibrium phases of Mg-Al-Ti system were worked out to be Al-Ti intermetallics by computing program of Miedema... composite are obviously enhanced. Key words: Al3Ti intermetallic; Mg-Al-Ti system; Miedema model; thermodynamics equilibrium phases ......
phases which contained Cu, Fe and Mn are small (＜5 μm). Key words: 2099 Al-Li alloy; homogenization process; dendritic structure; secondary phases 铝锂合金具有比强度高和比刚度高,疲劳裂纹扩展速率低和高,低温性能较好等特点,广泛应用于航天航空领域,成为减轻飞行...异的关键.为此,本文作者通过金相观察,扫描电镜,透射电镜以及力学性能分析等方法,研究了不同均匀化温度和时间对2099铝锂合金组织和性能的影响,提出了适合2099铝锂合金的均匀化处理制度,为2099铝锂合金的国产化提供可靠的数据支持. 1 实验方法 实验用2099铝锂合金成分见表1.合金以高纯Al,Mg,Zn和Li,以及Al-Cu,Al-Mn,Al-Zr,Al-Ti和Al-Be中间合金为......
> Microstructure and mechanical properties of enhanced solution treated 7075 and 2024 aluminum alloys Abstract: The effects of enhanced solution of second phases... the multi phase eutectic temperature without the formation of overheated microstructure, and improve the second phase solution. In contrast to alloy 2024, the second phases in alloy 7075 can dissolve more......
HRTEM studies of aging precipitate phases in the Mg-10Gd-3Y-0.4Zr alloy王冬舒1,李德江1,谢艳才1,曾小勤21. National Engineering Research Center of Light Alloys Net Forming,School of Materials Science... mechanisms in the Mg-RE alloys. In order to understand the formation of precipitates during aging at 225 oC in a Mg-10Gd-3Y-0.4Zr alloy(GW103K) with high strength and heat resistance, a high-resolution......
HRTEM studies of aging precipitate phases in the Mg-10Gd-3Y-0.4Zr alloy王冬舒1,李德江1,谢艳才1,曾小勤21. National Engineering Research Center of Light Alloys Net Forming,School of Materials Science... mechanisms in the Mg-RE alloys. In order to understand the formation of precipitates during aging at 225 oC in a Mg-10Gd-3Y-0.4Zr alloy(GW103K) with high strength and heat resistance, a high-resolution......
颗粒尺寸,挤压和时效时间对SiC颗粒增强Al-Cu-Mg基复合材料微观结构及硬度的影响沈茹娟1,2,王德高2,郭柏松2,宋旼1,21. 中南大学深圳研究院2. 中南大学粉末冶金国家重点实验室摘 要:研究Si C颗粒尺寸,挤压和时效时间对粉末冶金法制备的Si C颗粒增强Al-Cu-Mg基复合材料微观结构及硬度的影响.研究表明,挤压对复合材料的微观结构和硬度有重要影响,能够极大促进增强体在Al基体中的均匀分布和复合材料的致密化.挤压后的复合材料残留微孔减少,密度和硬度均得到显著提高.时效时间和Si C尺寸对复合材料中析出相的数量及尺寸有显著影响.采用较小尺寸的Si C作为增强体时,随时效时间延长,析出相在基体中均匀析出,没有明显长大,在时效12 h内没有出现峰时效.然而,采用较大尺寸的Si C作为增强体时......
DSC analysis of Al2O3-SiO2 short fiber reinforced Al-Cu-Mg alloy matrix compositesXU Hongyu,MENG Qingchang,GENG Lin,and LI Aibin School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China摘 要:Al2O3-SiO2 short fiber/Al-Cu-Mg matrix composites containing different Mg contents were fabricated using squeeze casting......
in magnesiumoxychloride cement prepared with MgCl2 solu-tions of different concentrations are mainly5.1.8 and Mg(OH)2.The relationship betweenthe ratio of the hydration phases and thestrength of the cement was calculated...HYDRATION PHASES IN MAGNESIUM OXYCHLORIDE CEMENT PASTE AND THEIR INFLUENCE ON THE STRENGTH INDEX崔可浩,崔崇,易海云摘 要:<正> The study is for the purpose......
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metallurgical performance and phases for different types of titanium-bearing blast furnace slags FENG Cong, CHU Mansheng, TANG Jue, TANG Yating, LIU Zhenggen (School of Metallurgy, Northeastern... chemical reagents, based on the components of practical blast furnace slag of vanadium-titanium magnetite provided by a domestic enterprise. Meanwhile, the main phases in slag and their content changes......
