서지주요정보
레이저빔을 이용한 표면경화처리에서 열유동 및 잔류응력에 관한 연구 = A study on the heat flow and residual stress in laser surface hardening treatment
서명 / 저자 레이저빔을 이용한 표면경화처리에서 열유동 및 잔류응력에 관한 연구 = A study on the heat flow and residual stress in laser surface hardening treatment / 양영수.
저자명 양영수 ; Yang, Young-Soo
발행사항 [서울 : 한국과학기술원, 1987].
Online Access 원문보기 원문인쇄

소장정보

등록번호

4104374

소장위치/청구기호

학술문화관(문화관) 보존서고

MPE 8712

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

At present, laser hardening is quite widely used for surface hardening of machine parts, dies, and tools. However, the processing parameters, such as beam spot diameter and surface condition of materials, can be kept only seldom consistant in practice. Therefore, numerical analysis is needed for the systematic data on the process, purely experimental results have always been dubious of general application. It is well known that the thermal and residual stresses can occure during the surface heat treatment of machine parts, such as flame, induction and laser surface hardening. However, to analyze the distribution of the residual stresses which has a great influence on the mechanical properties of the heat-treated parts, the problem of the heat flow must be solved at first. In this study, the heat flow problem during laser hardening process was numerically analyzed by using a finite difference method, and the calculated $A_c1$-isothermal lines were compared with the heat affected zone boundaries which could be visualized through the macroscopic etching technique. The calculated and experimental HAZ shapes and sizes were in relatively good agreement for various process parameters. The thermal and residual stresses were then numerically determined by using a finite element method.

서지기타정보

서지기타정보
청구기호 {MPE 8712
형태사항 vi, 49 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Young-Soo Yang
지도교수의 한글표기 : 나석주
지도교수의 영문표기 : Suck-Joo Na
학위논문 학위논문(석사) - 한국과학기술원 : 생산공학과,
서지주기 참고문헌 : p. 26-28
주제 Metals --Heat treatment.
Residual stresses.
Laser in engineering.
Finite differences.
잔류 응력. --과학기술용어시소러스
표면 경화 (열 처리) --과학기술용어시소러스
레이져 경화. --과학기술용어시소러스
유한 차분법. --과학기술용어시소러스
열 전달. --과학기술용어시소러스
Surface hardening.
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