【作者】 胡明； 费维栋； 周刚； 姚忠凯； 王德尊；

【Author】 Hu Ming Fei Weidong Zhou Gang Yao Zhongkai Wang Dezun(Harbin Institute of Technology, Materials Science and Engineering, Harbin, 150001)(Northeast Light Alloy Co., Ltd, Harbin, 150060)

【机构】 哈尔滨工业大学材料科学与工程学院； 东北轻合金加工厂；

【摘要】 利用X射线衍射技术,Instron电子拉伸机和透射电子显微镜,本文对退火后SiCw/p-Al和SiCw/6061Al复合材料的位错密度和屈服强度进行了研究。结果表明,经过退火后的SiCw/p-Al复合材料基体位错密度随加热温度的升高而下降,但微屈服强度、屈服强度增加;而SiCw/6061Al复合材料基体的位错密度在250℃保温时略高,且其屈服强度的变化趋势与位错密度的变化趋势一致。更多还原

【Abstract】 By means of XRD technique, Instron Tensile tester and TEM, the paper deals with the dislocation density in matrix around the whiskers, and microyield strength and yield strength for SiCw/p-Al and SiCw/6061Al composites after different annealing treatments. The results shows that the the dislocation density in matrix of SiCw/p-Al composites decreases with annealing temperature rising, while the microyield strength and yield strength of SiCw/p-Al increases. The dislocation density in matrix, microyield strength and yield strength of SiCw/60601 Al composite annealed at 250℃ for 2h is litter higher.更多还原