냉각속도(급랭, 서냉)에 따른 결정립 성장의 차이점 및 그 효과에 대한 고찰

소개글

냉각속도(급랭, 서냉)에 따른 결정립 성장의 차이점 및 그 효과에 대한 고찰에 대한 보고서 자료입니다.

목차

목 차
Ⅰ. 서론 ························ 1
1.1. 연구배경 및 목적··················1
1.2. 관련이론····················· 1
1.2.1 냉각(Cooling)·················· 1
1.2.1.1 서냉(annealing)을 통해 제공되는 구조····· 1
1.2.1.2 급랭을 통한 Martensite ··········· 2
1.2.1.3 냉각에 따른 구조적 특징 ··········· 3
1.3. 냉각법에 따른 구조의 발전 ············ 5
1.3.1 잔유 에너지 ·················· 5
1.3.2 에너지에 따른 결정 성장 ············ 6

Ⅱ. 본론 ························ 7
2. 1 실험 대상 물질 ·················· 7
2. 1. 1 수정이 불가능한 사항들 ············ 7
2. 1. 2 시험편 준비(Griding&Etching) ········· 7

Ⅲ. 결과 및 고찰 ····················· 9
3. 1 시험 결과 및 결론················· 9
3. 1. 1 첫 번째 실험(급랭) ·············· 9
3. 1. 2 두 번째 실험(서냉) ·············· 10
3. 1. 3 고찰 ····················· 10

Ⅳ 참고문헌························· 13

본문내용

실 험 보 고 서
제 목 : 급랭과 서냉 재료의 차이점 관측과 시험편 결정립 측정을 위한 준비.
과목 : 기초재료실험(2)
학번 : 20091765
작성자 : 최원석
담당교수 : 이의길 교수님
제출 기한 : 2010. 10. 19 오후 2시
목 차
Ⅰ. 서론 ················································································ 1
1.1. 연구배경 및 목적································································ 1
1.2. 관련이론··········································································· 1
1.2.1 냉각(Cooling)······················································ 1
1.2.1.1 서냉(annealing)을 통해 제공되는 구조································· 1
1.2.1.2 급랭을 통한 Martensite ··················································· 2
1.2.1.3 냉각에 따른 구조적 특징 ·············································· 3
1.3. 냉각법에 따른 구조의 발전 ·················································· 5
1.3.1 잔유 에너지 ················································ 5
1.3.2 에너지에 따른 결정 성장 ·················································· 6
Ⅱ. 본론 ··············································································· 7
2. 1 실험 대상 물질 ···························································· 7
2. 1. 1 수정이 불가능한 사항들 ·················································· 7
2. 1. 2 시험편 준비(Griding&Etching) ········································· 7
Ⅲ. 결과 및 고찰 ································································· 9
3. 1 시험 결과 및 결론···························································· 9
3. 1. 1 첫 번째 실험(급랭) ················································· 9
3. 1. 2 두 번째 실험(서냉) ················································· 10
3. 1. 3 고찰 ······································································· 10
Ⅳ 참고문헌········································································ 13
Ⅰ. 서론
1.1. 연구배경 및 목적
우리가 생활 속에서 익히 배우고 다루는 금속들은 온도를 올려줌으로서 에너지를 가해줄 수 있는데, 일정 역영에 도달하면 상(Phase)가 단 하나로서 Liquid 상태인 단상영역으로 진입하게 된다. 그 상태에 오르게 되면 다양한 처리가 가능한데, 처리에 따른 결과물 또한 매우 다르다. 이번 실험을 통해서는 이러한 여러 가지의 처리 중 가장 기본적인 처리법인 냉각(Cooling)을 통한 결과물들을 살펴볼 것이다. 이는 교과서에서 이야기할 때 온도가 매우 급격히 떨어져서 Diffusion(확산)이 일어날 틈도 없이 진행되는 변태이기에 매우 기계적인 성질이 크다고 한다. 단단하다는 말인데, 이렇게 단순히 이론적인 부분 말고 실제로는 조직이 어떻게 변하며 무엇 때문에 그렇게 입자의 크기가 달라지고 기계적 성질이 변하는 지를 알아볼 것이다.
또한, 추가적으로 이런 결과를 관찰하기 위한 방법을 숙지하는 것이 제 2의 목표이다.
실험은 8동 106호 재료실험실에서 이루어졌으며, 2010년 10월 12일 오후 2시부터 약 2시간 정도 진행이 되었다. 더군다나 이번 실험은 냉각의 종류인 급랭(Quenching,

키워드

급랭,   서냉,   결정립 성장,   강화,   냉각,   Cooling,   SuperCooling,   마르텐사이트