ELEVATED-TEMPERATURE, LOW-CYCLE FATIGUE BEHAVIOR OF AN AL2O3P/6061-T6 ALUMINUM-MATRIX COMPOSITE

被引：29

作者：

PERNG, CC ^{[1
]}

HWANG, JR ^{[1
]}

DOONG, JL ^{[1
]}

机构：

[1] NATL CENT UNIV,DEPT MECH ENGN,CHUNGLI 32054,TAIWAN

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 1993年 / 49卷 / 03期

关键词：

LOW-CYCLE FATIGUE; METAL-MATRIX COMPOSITES; AL2O3P/6061-T6; COMPOSITE; ELEVATED TEMPERATURE PROPERTIES; PARTICULATE REINFORCEMENT;

D O I：

10.1016/0266-3538(93)90105-P

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

The metal-matrix composite materials (MMC) consist of 10, 15 and 20 vol 9% of alumina particles (Al2O3p) in a 6061-T6 aluminium alloy matrix. Specimens were taken from hot-extruded rods and low-cycle fatigue (LCF) tests were carried out at various temperatures and strain amplitudes. The fracture surfaces were studied with a scanning electron microscope in order to understand the fracture mechanism of these composite materials under LCF conditions. From the results, it can be concluded that there is a little cyclic softening at lower strain amplitudes, irrespective of the test temperature, except for the 20 vol % MMC at 300-degrees-C. However, at high strain amplitude, the MMCs show cyclic hardening. The LCF behaviour of Al2O3p/6061-T6 is poorer than that of the unreinforced 6061-T6 Al alloy, especially in the short-life, high-amplitude region.

引用

页码：225 / 236

页数：12

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