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【期刊论文】The Strengthening and Toughening Mechanism of Fe-Al/Al2O3 Composite Material*
孙康宁, SUN Kangning, BI Jianqiang, LIU Rui
Journal of Wuhan University of Technology-Mater. Sci. Ed.,-0001,():
-1年11月30日
By means of different checks and measures, we observed and analysed the microstructure of Fe-Al/Al2 O3 composite material. We found that not only intragranular nanostructure grains and rod-like crystals but also fine-grained structure of the composite material as well as the bridging of the Fe-Al intermetallics compound contribute to the material's strength and toughness. It is shown that the strengthening and toughening of the Fe-Al/Al2 O3 composite is the joint effect of a multiplicate strengthening and toughening mechanism.
ceramic-base composite, strengthening and toughness, microstructure, intermetallics compound
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【期刊论文】Sintering technology research of Fe3A1/A1203 ceramic composites
孙康宁, Kangning Sun, Aimin Li, Xuemin Cui, Yangsheng Yin, Peiwu Li*
Journal of Matcnakl Processing Teclmology 113(2001)481-485,-0001,():
-1年11月30日
Fe3M/A1203 ceralllic composites are SOllle of the novel ceralllic composites that have good appliction prospects as catting tools and fomfing dies in this paper, the effects of different sintering technologies on the microslrnclm-e of these composites are conlpared and analysed, the optical micrograph of the composite sample nlade by different ratio and hot press sintering technology being observed and studied The results of experiment indicate that Fe3AI/A1203 composites with fine grains, compact strnctm-e and good mechanical properties can be obtained at about 1400℃ Furthermore, in addition to the sintering pressme, the content of Al203 and the additives ofthe composites, also have an-nnlportant influence on their sintering temperature, lnicrostrnctm-e and characteristics When adjusting the factors appropriately,the composites can be sintered at low temperature.
Composite, Microstmctme, Shitering tecknology
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【期刊论文】Fe3Al 有序度截留后的力学性能与价电子结构的关系
孙康宁, , 庞来学, 尹衍升
人工晶体学报,2004,33(4):575~580,-0001,():
-1年11月30日
利用固体与分子经验电子理论(EET)对Fe3Al的两种晶体结构:D03和B2的滑移能进行了计算,结果表明B2结构在室温下具有较低的滑移能,在较小的能量作用下,B2结构优先滑移,这预示B2结构具有较好的塑性。据此对D03结构的Fe3Al进行有序度截留(淬火处理)研究。截留后B2结构的Fe3Al材料的加工性能发生了显著变化,抗压强度和硬度下降。本文对比研究了D03和B2型Fe3Al价电子结构及其力学性能的关系,发现价电子结构与力学性能之间存在很好的相关性。
Fe3Al, 滑移能, 有序截留, 力学性能, 价电子结构
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