Wear behaviors of BMG alloy and BMG composites : Part 1. Wear behaviors of bulk metallic glass alloy and hardened steel having the same hardness value. Part 2. Wear behavior of Fe-based bulk metallic glass composites
- 주제(키워드) bulk metallic glass
- 발행기관 고려대학교 대학원
- 지도교수 허무영
- 발행년도 2013
- 학위수여년월 2013. 2
- 학위구분 석사
- 학과 일반대학원 신소재공학과
- 원문페이지 28 p
- 실제URI http://www.dcollection.net/handler/korea/000000038861
- 본문언어 영어
- 제출원본 000045745917
초록/요약
The wear behaviors of the Zr-based BMG alloy and hardened steel were examined using a pin-on-disc type testing machine with the same pin and disc materials. Steel with the same hardness as the BMG alloy was prepared to exclude the effect of hardness on the wear behaviors. The adhesive wear governs the wear of a steel-pin against a steel-disc. Limited plastic deformation of the BMG alloy leads to the formation of flake-like BMG debris and their size depends on the level of applied stress. Composite samples comprising Fe-based metallic glass (MG) particles and the crystalline Ni matrix were produced and their wear behaviors were investigated a pin-on-disc type tester with the counter material of a hardened steel. It turned out that the wear mechanism depended on the volume fraction of crystalline nickel in the composites. The transition from the brittle fracture to the adhesive wear was observed with increasing the volume fraction of ductile Ni in the composites.
more목차
Contents……………………………………………………………i
Abstract ………………………………………………………… ii
PART Ⅰ. Wear behaviors of bulk metallic glass alloy and hardened steel having the same hardness value
1.Introduction……………………………………………………2
2. Experimental procedure …………………………………3
3. Results and discussion …………………………………3
4. Conclusions ………………………………………………6
5. Reference …………………………………………………14
PART Ⅱ. Wear behavior of Fe-based bulk metallic glass composites
1. Introduction…………………………………………………17
2. Experimental Procedure…………………………………18
3. Results and discussion …………………………………18
4. Conclusions ……………………………………………20
5. Reference …………………………………………………25
