Fatigue Damage of Al/SiC Composites - Macroscopic and Microscopic Analysis

Archives of Metallurgy and Materials

Z.L. Kowalewski¹  A. Rutecka¹  K. Makowska²  K. Pietrzak²  L. Dietrich² 

[1] INSTITUTE OF FUNDAMENTAL TECHNOLOGICAL RESEARCH OF THE POLISH ACADEMY OF SCIENCES (IPPT PAN), 5B PAWI?SKIEGO STR., 02-106 WARSAW, POLAND;MOTOR TRANSPORT INSTITUTE, WARSAW, POLAND

关键词: Key words:: fatigue;    damage;    metal matrix composites;    microstructure;   

DOI  :  10.1515/amm-2015-0016

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

The results of comparative examinations of mechanical behaviour during fatigue loads and microstructure assessment before and after fatigue tests were presented. Composites of aluminium matrix and SiC reinforcement manufactured using the KoBo method were investigated. The combinations of two kinds of fatigue damage mechanisms were observed. The first one governed by cyclic plasticity and related to inelastic strain amplitude changes and the second one expressed in a form of ratcheting based on changes in mean inelastic strain. The higher SiC content the less influence of the fatigue damage mechanisms on material behaviour was observed. Attempts have been made to evaluate an appropriate fatigue damage parameter. However, it still needs further improvements.

【 授权许可】

Unknown