Theoretical Analysis of Laser Transformation Hardening Process of Hypoeutectoid Steel based on Kinetics

• OHMURA Etsuji

• INOUE Katsunori

• TAKAMACHI Yasuyuki

抄録

Coupling effects between the temperature field and structural changes are considered in the analysis of the laser transformation hardening process. The volume fractions of the structural constituents, the latent heat during the phase transformation and structure dependence of the thermophysical properties are introduced during the iterational calculations of the steady-state temperature distribution and the structural changes. The carbon content of a steel, the mean value of the grain size of the prior austenite, and the size and the interlamellar spacing of the pearlite colony are input for the initial parameters. Finite-element calculations are carried out to obtain the temperature distribution and the structural changes in the process, and the microhardness distribution in the hardened layer. An example of the numerical computations is shown for a 0.45 %C carbon steel. The calculated results are compared with those of the experiments on the laser transformation hardening and are found to be in good agreement.

収録刊行物

• JSME international journal. Ser. 1, Solid mechanics, strength of materials

  JSME international journal. Ser. 1, Solid mechanics, strength of materials 34 (4), 421-429, 1991

  一般社団法人 日本機械学会

キーワード

• Heat Treatment
• Laser Transformation Hardening
• CO2 Laser
• Finite Element Method
• Heat Conduction
• Phase Transformation
• Kinetics
• Microstructure

詳細情報

• CRID: 1390001205431702784
• NII論文ID: 110002348033
• NII書誌ID: AA10680585
• DOI: 10.1299/jsmea1988.34.4_421
• ISSN: 09148809
• Web Site: https://www.jstage.jst.go.jp/article/jsmea1988/34/4/34_4_421/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可