Effect of Quenching Heat-treatment on Mechanical Properties and Microstructure of Modified C95600 Bronze Lee, Sung-Yul; Moon, Kyung-Man; Oh, Jae-Hwan; Shin, Dong-Il;
Modified C95600 bronze contains Fe component of 0.7 weight percentage besides Cu-7Al-2.5Si composition. The shape of centrifugal cast is a circular pipe with thick wall. Specimens machined from the centrifugal cast were quenched in oil after isothermal holding at a given heat treatment temperature in the range of . Mechanical properties and structural morphology are depended on the quenching heat treatment temperature regardless of isothermal holding time. Tensile strength or Brinell hardness is increased with increasing heat treatment temperature. The microstructure caused by quenching contains mixing phases of which martensite of phase has been transformed from phase. Effect of isothermal holding temperature on mechanical properties in case of quenching heat treatment attributes to the change of volume fraction of on the structural morphology. Mechanical characteristics of specimen, initially quenched from , and then tempered at , does not show an obvious softening indication, because disappearance of during tempering process can be compensated by precipitation of brittle phase .
ASM (1991). Metal Handbook, 10th ed., Vol 2, Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM International, pp 386.
ASTM B 148 (1992). Standard Specification for Aluminum-Bronze Sand Castings, ASTM, pp 247-252.
Cenoz, I. and Gutierrez, M. (2011). "Phase Transformations in Cu-Al Alloy", Metal Science and Heat Treatment, Vol 53, No 5-6, pp 265-269.
Davis, J.R. and Davis associates. (2001). "Copper and Copper Alloys", ASM International, pp 46-53.
Kondrat'ev, S. Yu., Chaikovskii, B.S., Yaroslavskii, G. Ya. and Matveev, V.V. (1980). "Effect of Silicon on the Mechanical Properties and Damping Capacity of Two-Phase Aluminum Bronzes in the Hardened State", Problemy Prochnosti, Vol 9, No 3, pp 107-109. (translated in English.)
Swann, P.R. and Warlimont, H. (1963). "The Electron- Metallography and Crystallography of Copper-Aluminum Martensites", Acta Metallurgica, Vol 11, No 7, pp 511-527.
Villars, P., Prince, A., and Okamoto, H. (1995), "Handbook of Ternary Alloy Phase Diagrams", Vol 3, ASM International, pp 3330-3351, 9444-9454