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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.1
- 수록면
- 827 - 843 (17page)
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초록· 키워드
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In this study, first of all, sub-micron LaB6reinforcing particles were synthesized in the size range of 100–500 nm viamechanochemical synthesis and leaching steps. Afterwards, Al-7 wt% Si matrix alloy and 2 wt% laboratory synthesizedLaB6powders were mechanically alloyed (MA’d) at different durations to constitute Al-7 wt% Si/2 wt% LaB6. Followedby compaction under a pressure of 450 MPa in a uniaxial cold press, samples were sintered at 570 °C for 2 h in flowing Argas atmosphere. Microstructural characterizations of the powders and sintered samples were performed using X-Ray Diffractometry(XRD) and Scanning Electron Microscopy (SEM) techniques. Effects of both MA (0, 1, 4 and 8 h) and LaB6reinforcement (0 and 2 wt%) on the mechanical properties of the composites were determined in terms of microhardness anddry sliding tests. Both MA process and LaB6reinforcement were found to make positive contribution to the hardness andwear resistance values. As-blended and sintered Al-7 wt% Si matrix alloy had a hardness value of 0.43 GPa. On the otherhand, 8 h MA’d and sintered Al-7 wt% Si/2 wt% LaB6composite had the highest hardness (0.97 GPa) and the 4 h MA’d onehad the lowest wear rate (3.25 × 10−6 mm3/N mm) among all the sintered samples. The hardness and wear resistance valueswere increased by approximately 2 times in the 4 h MA’d and sintered Al-7 wt% Si-2 wt% LaB6composite compared to its1 h MA’d counterpart.
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참고문헌 (51)
참고문헌 신청
Anna Maria Cardinale / 2017 / Thermal and corrosion behavior of as cast Al Si alloys with rare earth elements / Journal of Alloys and Compounds 695:2180~2189
S.Q Wu / 1996 / Mechanical and wear behavior of an Al/Si alloy metal-matrix composite reinforced with aluminosilicate fiber / Composites Science and Technology 56(11):1261~1270
W.S Miller / 2000 / Recent development in aluminium alloys for the automotive industry / Materials Science and Engineering: A 280(1):37~49
Won-Kyung Kang / 2012 / Fabrication of Al–20wt%Si powder using scrap Si by ultra high-energy milling process / Journal of Alloys and Compounds 536:S45~S49
N. Haghdadi / 2016 / Evolution of microstructure and mechanical properties in a hypoeutectic Al–Si–Mg alloy processed by accumulative back extrusion / Materials Science and Engineering: A 651:269~279
S.Q Wu / 1996 / Mechanical and wear behavior of an Al/Si alloy metal-matrix composite reinforced with aluminosilicate fiber / Composites Science and Technology 56(11):1261~1270
W.S Miller / 2000 / Recent development in aluminium alloys for the automotive industry / Materials Science and Engineering: A 280(1):37~49
Won-Kyung Kang / 2012 / Fabrication of Al–20wt%Si powder using scrap Si by ultra high-energy milling process / Journal of Alloys and Compounds 536:S45~S49
N. Haghdadi / 2016 / Evolution of microstructure and mechanical properties in a hypoeutectic Al–Si–Mg alloy processed by accumulative back extrusion / Materials Science and Engineering: A 651:269~279
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