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자료유형
학술저널
저자정보
이형근 (한밭대학교)
저널정보
대한용접·접합학회 대한용접·접합학회지 大韓熔接·接合學會誌 第40卷 第1號
발행연도
2022.2
수록면
48 - 53 (6page)

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In this study, a multilayer laser-cladding method was used to increase the Si content in a hypereutectic Al-Si alloy laser cladding. One-, two-, and three-layer claddings were produced by printing Si powder paste on A1050 aluminum surfaces using 180-, 210-, and 250-㎛-thick plastic tape, respectively, and then irradiating laser pulses over them. The two- and three-layer claddings were produced by printing on the one- and two-layer cladding surfaces, respectively. The one-layer cladding had a thickness of approximately 190 ㎛ and was uniform and defectless. The cladding had a chemical composition of Al-20.2 wt.% Si and had a fine eutectic Al-Si microstructure in most regions. By contrast, the two-layer cladding had a thickness of approximately 250 ㎛ and exhibited many pores and some cracks. The cladding had a chemical composition of Al-60.5 wt.% Si and a hypereutectic Al-Si microstructure with many coarse primary Si particles. Finally, the three-layer cladding had a thickness of approximately 280 ㎛ and exhibited many large pores and a few large cracks. The cladding had a chemical composition of Al-72.6 wt.% Si and a hypereutectic Al-Si microstructure with very coarse primary Si particles. Block-on-roll wear tests were then performed on the claddings. The weight losses in the one-, two-, and three-layer claddings following the wear test were 5.5, 7.7, and 8.3 mg, respectively.

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Abstract
1. 서론
2. 실험 방법
3. 실험 결과 및 검토
4. 결론
References

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