Title page for etd-1007100-102257


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URN etd-1007100-102257
Author Tsung-Ting Wang
Author's Email Address d8536803@student.nsysu.edu.tw
Statistics This thesis had been viewed 5333 times. Download 2272 times.
Department Materials Science and Engineering
Year 1999
Semester 1
Degree Ph.D.
Type of Document
Language zh-TW.Big5 Chinese
Title DEVELOPMENT AND ANALYSIS OF FINE-GRAINED 6061 Al BASED MATERIALS ON HIGH STRAIN RATE SUPERPLASTICITY
Date of Defense 2000-10-02
Page Count 259
Keyword
  • TEXTURE
  • MECHANICAL PROPERTY
  • SUPERPLASTICITY
  • MICROSTRUCTURE
  • Abstract 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.
    Advisory Committee
  • N-G HE - chair
  • L-W CHANG - co-chair
  • K-C HSIEH - co-chair
  • Y-M HWANG - co-chair
  • J-0C HUANG - advisor
  • Files
  • thesis.pdf
  • indicate in-campus access immediately and off_campus access in a year
    Date of Submission 2000-10-07

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