FOUR 6061 AL SYSTEMS WERE PREPARED, INCLUDING THE CAST 6061 ALLOY BY TMT OR ECAP, THE PM 6061 ALLOY, AND THE MODIFIED PM 6061 ALLOY ADDED WITH 1 VOL% NANO-SIO2. THE MODIFIED 6061/1%NANO-SIO2 ALLOY POSSESSED A GRAIN SIZE~0.5 UM AND MAINTAINED FINE GRAIN SIZE UPON LOADING AT HIGH TEMPERATURE, RESULTING IN HSRS OVER 300% AT 550-590 OC AND 1-5X10-1 S-1. THE GRAIN BOUNDARY MISORIENTATION DISTRIBUTION IN THE MODIFIED 6061/1%NANO-SIO2 ALLOY WAS ALSO MOST RANDOM COMPARED WITH OTHER THREE UNMODIFIED 6061 ALLOYS. THE CURRENT RESULTS SUGGEST THAT THE ADDITION OF A SMALL AMOUNT OF CHEAPER SIO2 OR AL2O3 NANO-PARTICLES INTO COMMERCIAL AL ALLOYS CAN EFFECTIVELY SUPPRESS GRAIN GROWTH AT HIGH TEMPERATURES AND ENHANCE HSRS, SIMILAR TO THE EFFECTS BY ADDING 15-25VOL% MICRO-SIZED SIC OR SI3N4 REINFORCING PARTICULATES OR WHISKERS.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-1007100-102257 |
| Date | 07 October 2000 |
| Creators | Wang, Tsung-Ting |
| Contributors | K-C HSIEH, L-W CHANG, Y-M HWANG, J-0C HUANG, N-G HE |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1007100-102257 |
| Rights | off_campus_withheld, Copyright information available at source archive |
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