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effects. Key words: CNTs/MoSi2 composite; spark plasma sintering; mechanical property; microstructure; strengthening and toughening mechanism 1 Introduction The combination of high melting point (2030 °C... strengthening of Mo4.8Si3C0.6 particles hindering crack propagation. CARTER and HURLEY [27] suggested that crack deflection was the main toughening mechanism in SiC-whisker-reinforced MoSi2......
of the composites were investigated. The toughening mechanism was also analysed. The results show that the relative density and Rockwell hardness of the composites increase with increasing Nb2O5 content. When...: two-phase TiAl alloy; Al2O3; in situ reaction; microstructure; mechanical property; toughening mechanism  ......
with weak interface toughening mechanism 弱界面增韧层状材料,除了通过增多断口面积消耗能量外,适当地提高界面强度使断裂吸收功增多,可以进一步改善韧性.此外,界面强度太低可能会引起层状材料综合性能的下降,甚至会影响其结构完整性[37].因此,制备/设计弱界面增韧层状材料时,可以通过制备工艺优化,中间层选择/设计等方式适当地提高界面强度以拓展层状材料的应用范围. 1.2...,这极大地提高了其安全性和使用性能. 图3 塑性中间层增韧层状材料的机理示意图 Fig. 3 Mechanism schematic diagram of plastic interlayer toughening lamellar materials 综上所述,层状增韧主要是利用引入的界面或/和中间层消耗脆性材料断裂时的能量以改善其韧性.因此,层状材料研究的关键在于其界......
TOUGHENING OF IN SITU SYNTHESIZED MoSi2-SiC COMPOSITE AT ROOM TEMPERATURE J.Zhu1,L.Q.Zhang2,Z.Q.Sun3,X.W.Fu2,W.Y.Yang2 (1.School of Materials, Tsinghua University, Beijing 100083, China;2.School..., it is concluded that the toughening of such compositeat room temperature can be attributed to the high interfacial binding energy, the re-finement of the MoSi2 matrix and the defection and bridging......
Trans. Nonferrous Met. Soc. China 28(2018) 2440-2448 Microstructure-fracture toughness relationships and toughening mechanism of TC21 titanium alloy with lamellar microstructure Zhi-feng SHI1,2, Hong... plates (or secondary α platelets) could enhance the fracture toughness of TC21 alloy. Based on energy consumption by the plastic zone of crack tip in α plates, a toughening mechanism for titanium alloys......
% and the best strengthening and toughening effect of this foil is achieved by adopting 560 ℃, 16 h homogenizing and 230~260 ℃, 1 h final annealing. The strengthening and toughening mechanism... 收稿日期:2000-01-23 Strengthening and toughening of AA1100 aluminum foil Abstract: The effects of homogenizing, middle and final annealing processes on strength......
环氧树脂灌封材料的研究进展 叶丙睿1,赵锡钧1 (1.中国工程物理研究院电子工程研究所,绵阳,621900) 摘要:简述了环氧树脂胶粘剂几种典型的增韧改性机理,包括橡胶类增韧剂增韧机理,塑性树脂形成半互穿网络结构增韧机理,改变交联网络的化学结构增韧机理以及控制分子链交联网络状态的不均匀性来改进环氧树脂增韧机理等,介绍了以上机理在液晶环氧树脂,氰酸酯树脂改性环氧树脂以及纳米离子改性环氧树脂中的具体应用,提出了环氧树脂的应用发展方向主要体现在低粘度化和提高耐热性,降低吸水率2个方面,最后简要说明了环氧树脂胶粘剂的使用注意事项. 关键词:环氧树脂; 灌封材料; 增韧机理; epoxy resin; encapsulation material; toughening mechanism; [全文内容正在添加中] ......
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; Existing form and action mechanism of minor...; Abstract: In order to investigate the existing form and action mechanism of minor scandium (Sc......
相颗粒, 对裂纹的形成和扩展起到阻碍作用, 会使金属陶瓷因裂纹扩展途径发生偏转而增韧. 关键词: Ti(C, N)基金属陶瓷; 断口形貌; 增韧机理; 力学性能 中图分类号: TG113.254 文献标识码: A Appearance of fracture and toughening mechanisms of Ti(C, N)-based cermets LIU Wen-jun1... the form and extend of crack. The experiment results indicate that the toughening mechanisms of nano-composite cermets is crack deflection toughening. Key words: Ti(C, N)-based cermets; appearance......