Title page for etd-0810112-150811


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URN etd-0810112-150811
Author Yu-Ling Xie
Author's Email Address No Public.
Statistics This thesis had been viewed 5356 times. Download 230 times.
Department Materials and Optoelectronic Science
Year 2011
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title The effect of heat treatment on the tensile property and microstructure of Fe-10Mn-3Al-0.6C alloy.
Date of Defense 2012-07-30
Page Count 166
Keyword
  • ferrite
  • carbide
  • annealing
  • TWIP
  • austenite
  • Abstract Twin induced plasticity (TWIP) steel is a new type of structural steel, which is characterized by both high strength and superior ductility. The key to twin formation lies in the control of the stacking fault energy (SFE) of the alloy. In this thesis, the effect of heat treatment on the tensile property and microstructure of a Fe-10Mn-3Al-0.6C alloy was studied.
    After annealing at 675℃ for different times, It was found that both austenite and ferrite phases existed. The volume fraction and composition of these two phases did not change significantly by the heat treatment conditions used. When annealed at 675℃, increasing annealing time caused the carbides formed at grain boundaries gradually dissolved, and led to the higher ultimate tensile stress, 900MPa, and elongation, 40%. Deformation twins were formed in the austenite phase after tensile test in the annealed specimens, indicating that TWIP behavior occurred. The best tensile property of Fe-10Mn-3Al-0.6C alloy obtained by annealing at 675℃ is within the target property of the 3rd AHSS.
    Advisory Committee
  • CHANG,LIU-WEN - chair
  • KUO,JUI-CHAO - co-chair
  • Chih-Pu Chang - advisor
  • Files
  • etd-0810112-150811.pdf
  • Indicate in-campus at 5 year and off-campus access at 5 year.
    Date of Submission 2012-08-10

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