영문 신소재 공정실습 기말 레폿(casting & p/m)

소개글

영문 신소재 공정실습 기말 레폿(casting & p/m)

목차

1. Experiment Subject

2. Experiment Purpose

3. Experiment Theory
3-1. Heat Treatable Aluminum Alloys
3-2. Casting
3-3. Vickers Hardness
3-4. Optical Microscope
3-5. Electrical Conductivity
3-6. XRD

4. Experimental Methods
4-1. process

5. Result & Analysis
5-1. Hardness
5-2. Optical Microscope
5-3. Electrical Conductivity
5-4. XRD

6. Discussion
6-1. Hardness
6-2. Optical Microscope
6-3. Electrical Conductivity
6-4. XRD

7. Reference

본문내용

1. Experiment Subject
In casting process of Al-4.5wt%Cu alloy, To investigate how prescription processing time effect on material`s characteristics to measure Electrical conductivity, hardness, micro-organization, XRD data and analyze Al-4.5wt%Cu alloy. And compare casting & P/M by variables.


2. Experiment Purpose
To study most appropriate heat treatment time when aluminum and 4.5% copper is casted.
Al-4.5wt%Cu alloy shows corrosion resistance`s reduction, because copper contained in pure aluminum. Tensile strength increases with incresing Cu content, but elongation deceases. Al-4.5wt%Cu alloy have good mechanical properties, mechanical formability and casting property, but have a defect to produce a crack at high temperature.
To remove these defect, set up purpose of the experiment to investigate a best process to minimize High-temperature crack defect by experiment to set a best experiment temperature and proper time as a variable factors of the experiment.

3. Experiment Theory
3-1. Heat Treatable Aluminum Alloys
The term “heat treating” for aluminum alloys is frequently restricted to the specific operations employed to increase strength and hardness of the precipitation-hardening and cast alloys. These usually are referred to as the “heat-treatable” alloys to distinguish them from those alloys in which no significant strengthening can be achieved by heating and cooling. Heat treatment to increase strength of aluminum alloys is a three-step process:

참고 자료

①Metallurgical Transactions A/ Volume 6/ Issue 3/ pp.625-630
②강도학 자료/ 김득중 교수님
③Materials Science and Engineering/ William D. Callister, Jr. /Second Edition/ p.477, p.484, pp.582-595,
④주조공학/ 송광호, 최성갑/ 普文堂/ 1996.
⑤시효 처리 시간에 따른 알루미늄폼 합금 재료의 미세구조와 기계적 특성 연구 /류관무(인하대 대학원)
⑥http://www.bruker-axs.de/fileadmin/user_upload/xrfintro/sec1_8.html
⑦http://www.wikipedia.org
⑧http://nonferrous.keytometals.com/default.aspx?ID=CheckArticle&NM=39
⑨ The effect of time and temperature on the precipitation behavior and hardness of Al–.4wt%Cu alloy using design of experiments/ Adel Mahmood Hassan∗., Omar M. Bataineh, Khalil M. Abed/ journal of materials processing technology