Title page for etd-0717116-120753


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URN etd-0717116-120753
Author Yi-jeng Hou
Author's Email Address No Public.
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Department Materials and Optoelectronic Science
Year 2015
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Microstructure and phase diagram Study of Fe-Mn-Al-C Alloy
Date of Defense 2016-07-28
Page Count 93
Keyword
  • salt bath heat treatment
  • Fe-Mn-Al-C steels
  • heat treatment
  • EPMA
  • hardness test
  • Phase diagram
  • Abstract Abstract
    Recently, the Fe-Mn-Al-C steels have been studied as high strength steel to apply in automobile industry in order to reduce the car weight and gas mileage. Phase diagram and phase transformation knowledge are the basic requirement for the development of the Fe-Mn-Al-C steels. In this study, the phase diagram of Fe-Mn-Al-C was investigated in several isopleths related to the development of high strength steels.
    The isopleths were calculated by CALPHAD method first. A series of samples were prepared to check the calculated isopleths and these experiment results were applied to revise the data base. The experiments included equilibrium heat treatment and microstructure analysis using X-ray and electron microprobe (EPMA).
    The first part focuses on the phase transformation of Fe-5.3Mn-2.3Al-0.3C alloy steel at 550 and 600 oC under a salt bath experiment. The second part is to study the microstructure and phase diagrams by preparing various contents of aluminum, manganese and carbon content around Fe-5.3Mn-2.3Al-0.3C alloy region.
    Advisory Committee
  • H.-J. Wu - chair
  • Lung-Chuan Tsao - co-chair
  • Ker-Chang Hsieh - advisor
  • Files
  • etd-0717116-120753.pdf
  • Indicate in-campus at 5 year and off-campus access at 5 year.
    Date of Submission 2016-08-17

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