期刊
MATERIALS & DESIGN
卷 36, 期 -, 页码 735-740出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2011.12.014
关键词
Non-ferrous alloys; Forming; Heat treatments
资金
- Ministry of Knowledge Economy, Republic of Korea
- cooperative research project Development of common manufacturing technology for high functional susceptor [B551179-08-01-00]
- National Research Council of Science & Technology (NST), Republic of Korea [산업-일반-협동6] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In this paper static and dynamic strain ageing behavior in Al-Mg-Si alloys related to equal channel angular pressing (ECAP) was investigated. In order to examine the combined plastic deformation, solution treatment and ageing effects on strengthening characteristics, experimental results of ageing without ECAP, pre-ECAP ageing, post-ECAP ageing and dynamic ageing inside of ECAP die were compared. In particular, the effects of ageing temperature, ageing time, strain rate in ECAP, and sequence of heat treatment and ECAP on Vickers hardness were discussed. To achieve a higher hardness, an optimum ageing cycle combined with ECAP process is presented based on the results of current study. By employing the proposed schedule the hardness value was increased from 86 HV (as-solution treatment) to 138 HV (peak hardness of the current schedule). (C) 2011 Elsevier Ltd. All rights reserved.
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