Aging Behaviour Of AA6061/SiCP Composites Produced By Direct Extrusion With A Reversibly Rotating Die Method

Archives of Metallurgy and Materials

W. Bochniak¹  J. Wozniak²  M. Kostecki²  A. Olszyna²  K. Broniszewski² 

[1] AGH UNIVERSITY OF SCIENCE AND TECHNOLOGY, FACULTY OF NON-FERROUS METALS, AL. A. MICKIEWICZA 30, 30-059 KRAKOW, POLAND;WARSAW UNIVERSITY OF TECHNOLOGY, FACULTY OF MATERIAL SCIENCE AND ENGINEERING, 141 WO?OSKA STR., 02-507 WARSAW, POLAND

关键词: Keywords: Aging treatment;    Al/SiCp composites;    Extrusion;    Microstructure;    Mechanical Properties;   

DOI  :  10.1515/amm-2015-0301

学科分类：金属与冶金

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

【 摘 要 】

This paper discusses the influence of thermal treatment parameters on mechanical properties of AA6061+x% vol. SiCp (x = 0, 2.5, 5, 7.5, 10) composites. The composites were consolidated via powder metallurgy processing using the unconventional method of extrusion (the KoBo method). In order to establish the optimum parameters of the heat treatment two different temperatures of supersaturation (530 and 558ºC) were applied. The aging curves were determined at various aging temperatures such as 140, 160, 180 and 200ºC. The effects of applied parameters were studied using the microstructure observations and hardness measurements. Obtained results show that the solution treatment at 530ºC is sufficient to complete dissolution of the precipitates. Higher temperature of the process resulted in accelerating the aged-hardening. The suitable age treating parameters for the AA6061-5 vol. % SiCp composites were 160 - 180ºC for 12 - 16 hours.

【 授权许可】

Unknown