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of the reinforcement particle fracture and interface between matrix and particle debond on the strength of SiCp/Al composites were investigated. A model based on the Eshelby’s equivalent inclusion theory for SiC...; Relationship among yield strength, failure volume fraction and particle diameter in SiCp/2124Al composites 从图1(b)可以看出,当SiC颗粒含量一定时,复合材料中的颗粒总失效分数与SiC颗粒粒度的变化曲线存在一个先降后升的过程.由模型模拟结果可以看到,复合材料的界面脱粘分数在颗粒粒度小于10......
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Manufacturing, Zhengzhou University of Light Industry摘 要:Particle removal mechanism was presented during machining particle SiC/Al composites with diamond grinding tool. The relevant removal modes and their mechanisms were discussed considering the impact and squeezing effect of diamond grit on the SiC particle. The experimental results show......
径呈规则排列,粗细搭配,得到密度最大,空隙最小的沥青混合料.因此,当粗细比为1:2时,SiC砂颗粒之间的有效接触最大,形成了更多的导热通道,构成了更完整的导热网络,最终使导热系数提高更快. 图12 不同粗细比的SiC砂粒径分布 Fig. 12 Particle size distribution of SiC sand with different mass ratios 3 结论...(1) 式中:MSi为SiC砂的质量;MF为替代的细集料的质量;为SiC砂的密度;为普通细集料的密度. 试件成型方法按照JTG E20-2019"公路工程沥青及沥青混合料试验规程"执行.设计油石比(沥青质量占石料质量的百分比)为5.5%. 1.3 SiC砂电磁性能测试 保持样品A和B的颗粒原貌,按质量比1:1将样品与石蜡均匀混合制成内径为3.04 mm,外径为7.00 mm,厚度为2.00 mm......
in the SZ due to the addition of SiC nano-particles during the FSW. The presence of the SiC nano-particle reinforcements in the SZ exhibited a direct effect on reducing the average grain size... [36]. However, the tensile properties are expected to be more different by adding SiC nano- particles to joints. The interaction between base metal and reinforcement, degree of particle agglomeration......
on in-situ preparation of TiB2 particle reinforced ZL109 composite, hybrid particles of TiB2 and SiC reinforced ZL109 composite were fabricated by adding SiC particle reinforced ZL109 composite... that of the composite reinforced by one kind of particle, and the actual value of elastic modulus is 14.7% higher than calculated value. After T6 heat treatment, the tensile strength of (10%TiB2+10%SiC)/ZL109......
SiC涂层C/C复合材料应力氧化失效行为 肖 鹏1,黄 辉1,栾新刚2,刘持栋2 (1. 中南大学 粉末冶金国家重点实验室,湖南 长沙,410083; 2. 西北工业大学 超高温结构复合材料国防科技重点实验室,陕西 西安,710072) 摘 要:在氧化性气氛(21% O2+79% Ar),不同拉应力下研究SiC涂层C/C复合材料在1 000 ℃和1 300 ℃的氧化失效行为;采用扫描电镜观察SiC涂层C/C复合材料氧化失效后的断口形貌.试验结果表明:当温度为1 000 ℃,拉应力由C/C复合材料拉伸强度的20%增加至50%时,SiC涂层C/C复合材料的应力氧化明显加剧,寿命由大于5.00 h缩短到2.92 h,应力对SiC涂层C/C复合材料的寿命有显著影响;当拉应力为C/C复合材料拉伸强度的50%,温度为1 000 ℃和1 300 ℃时,材料均......
effects on microstructure and mechanical properties of high volume fraction SiC-particle reinforced Al-MMCs made by squeeze casting infiltration[J]. Composites Science and Technology, 2007, 67: 737-745... Mechanical behaviors of ZL109/Al2O3·SiO2 particle reinforced composites LI Yue-ying(李月英), CAO Zhan-yi(曹占义), LIU Yong-bing(刘勇兵) Key Laboratory of Automobile Materials(Ministry of Education), Jilin......
DOI:10.19476/j.ysxb.1004.0609.2000.04.022 亚微米SiC粉体的氧化过程 李小斌 周秋生 刘业翔 熊翔 郝杰 中南工业大学冶金科学与工程系!长沙410083 中南工业大学粉末冶金研究所!长沙410083 中国长城铝业公司氧化铝厂!郑州450041 摘 要: 从热力学和动力学角度研究了亚微米级SiC粉体的氧化过程 , 结果表明 :当温度低于 80 0℃ , 亚微米级的SiC粉体很难在空气中氧化 ;但在较高温度下 (90 0~ 12 0 0......
conductivity of Al-SiC composites with monomodal and bimodal particle size distribution[J]. Materials Science and Engineering A, 2008, 480(1/2): 483-488. [5] MONTOYA-DAVILA M, PECH-CANUL M A, PECH-CANUL M I... Gen-lian, JI Gang, ZHANG Jie, XU Run, SHAN Ai-dang, LI Zhi-qiang, ZHANG Di. Effect of particle size on the thermal and mechanical properties of aluminum composites reinforced with SiC and diamond[J......