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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2004.1
- 수록면
- 313 - 319 (7page)
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The flame quenching process has been employed to modify the surfaces of a commercial marine propeller material, aluminum bronze alloy (Cu-9Al-5Ni-5Fe), and the material’s microstructure and hardness properties have been studied. The thermal history was accurately monitored during the process at various surface temperatures and holding times. XRD and EDX analyses have shown that above Tβ temperature the microstructure consisting of α and κ phases changes into α and β' martensite due to an eutectoid reaction of α + β→κ and a martensitic transformation of β→β'. The β' martensite phase formed has a face-centered cubic (FCC) crystal structure with typical twinned structure. The hardness of the flame-quenched layer having the α + β' structure is similar to or lower than that of the α + κ structure, depending highly on the size and distribution of β' and κ phases. It is noted that the sliding wear resistance of the flame-quenched layer is enhanced with the formation of β' martensite.
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