Mn 첨가가 경면처리용 Fe계 신합금의 캐비테이션 에로젼과 슬라이딩 마모저항성에 미치는 영향

김윤갑; 오영민; 김선진; Yoon-Kap Kim; Young-Min Oh; Seon-Jin Kim

Korean Journal of Materials Research, Vol.12, No.7, 550-554, July, 2002

DOI10.3740/MRSK.2002.12.7.550 Export Citation

Mn 첨가가 경면처리용 Fe계 신합금의 캐비테이션 에로젼과 슬라이딩 마모저항성에 미치는 영향

Effect of Mn-Addition on the Sliding Wear Resistance and the Cavitation Erosion Resistance of Fe-base Hardfacing Alloy

김윤갑^†, 오영민, 김선진

한양대학교 신소재공학부

Yoon-Kap Kim^†, Young-Min Oh, and Seon-Jin Kim

Division of materials Science and Engineering, Hanyang University, Korea

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The effect of Mn on cavitation erosion resistance and the sliding wear resistance of Fe-base hardfacing NewAlloy was investigated. Mn is known to decrease stacking fault energy and enhance the formation of ε -martensite. Cavitation erosion resistance for 50 hours and sliding wear resistance for 100 cycles were evaluated by weight loss. Fe-base hardfacing NewAlloy showed more excellent cavitation erosion resistance than Mn-added NewAlloys. Υ?α ' phase transformation that can enhance erosion resistance by matrix hardening occurred in every specimens. But, only in Mn free Fe-base hardfacing NewAlloy, the hardened matrix could repress the propagation of cracks that was initialed at the matrix-carbides interfaces more effectively than Mn-added NewAlloy The Mn free Fe-base hardfacing NewAlloy showed better sliding wear resistance than Mn-added alloys. Mn-addition up to 5wt.% couldn't increase the sliding wear and cavitation erosion resistance of Fe-base hardfacing alloy because it didn't make Υ→ε martensite phase transformation. Therefore, it is considered that the cavitation erosion and the sliding wear resistance can be improved due to Υ→ε martensite phase transformation when Mn is added more than 5wt.% in Fe-base hardfacing alloys.

Keywords:Cavitation erosion;Hardfacing alloy;Stacking fault energy;Hardness;Phase transformation

[References]

ASM Handbook Vol.18, ASM International, 214 (1992) (1992)
Ocken H, Nuclear Tech, 68, 18 (1985)
Budinski KG, Wear, 74, 93 (1981)
Swanson PA, Wear, 122, 207 (1988)
Antony KC, J. of Metals, 52 (1983)
Ohriner EK, Wada T, Whelan EP, Metallo Trans. A, 22A, 983 (1991)
Atmert S, Stekly, Surface Eng., 9, 231 (1993)
Vaidya S, Mahajan S, Prseece CM, Metall. Trans., 11A, 1139 (1980)
Annual Book of ASTM Standards G-32, ASTM, 115 (1992) (1992)
Zhou YK, Hammitt FG, Wear, 86, 299 (1983)
Feller HG, Kharrazi Y, Wear, 93, 249 (1984)
Shramm RE, Reed RP, Metall. Trans., 6A, 1345 (1975)
Tomota Y, Morris JW, Metall. Trans., 19A, 1563 (1988)
Olson GB, Cohen M, Metall. Trans., 6A, 791 (1975)
Kim GM, Kim JK, Yang YS, Kang SG, Kim SJ, Korean J. Mater. Res., 9(9), 937 (1999)

[Related Articles]

[1] ASM Handbook Vol.18, ASM International, 214 (1992) (1992)

[2] Ocken H, Nuclear Tech, 68, 18 (1985)

[3] Budinski KG, Wear, 74, 93 (1981)

[4] Swanson PA, Wear, 122, 207 (1988)

[5] Antony KC, J. of Metals, 52 (1983)

[6] Ohriner EK, Wada T, Whelan EP, Metallo Trans. A, 22A, 983 (1991)

[7] Atmert S, Stekly, Surface Eng., 9, 231 (1993)

[8] Vaidya S, Mahajan S, Prseece CM, Metall. Trans., 11A, 1139 (1980)

[9] Annual Book of ASTM Standards G-32, ASTM, 115 (1992) (1992)

[10] Zhou YK, Hammitt FG, Wear, 86, 299 (1983)

[11] Feller HG, Kharrazi Y, Wear, 93, 249 (1984)

[12] Shramm RE, Reed RP, Metall. Trans., 6A, 1345 (1975)

[13] Tomota Y, Morris JW, Metall. Trans., 19A, 1563 (1988)

[14] Olson GB, Cohen M, Metall. Trans., 6A, 791 (1975)

[15] Kim GM, Kim JK, Yang YS, Kang SG, Kim SJ, Korean J. Mater. Res., 9(9), 937 (1999)