가스분무성형 Cu-5Ni-10Sn 합금의 미세조직 및 시효강화
Microstructural Feature and Aging Characteristics of Spray-Formed Cu-5Ni-10Sn Alloy
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In this study, Cu-5Ni-10Sn(wt%) spinodal alloy was manufactured by gas atomization spray forming, and the microstructural features and mechanical properties of Cu-5Ni-10Sn alloy have been investigated during homogenization,cold working and age-hardening. The spray formed Cu-5Ni-10Sn alloy consisted of an equiaxed microstructure with a mixture of solid solution α-(CuNiSn) grains and lamellar-structure grains. Homogenization at 800oC and subsequent rapid quenching formed a uniform solid solution α-(CuNiSn) phase. Direct aging at 350oC from the homogenized Cu-5Ni-10Sn alloy promoted the precipitation of finely distributed γ' or γ-(Cu,Ni)3Sn phase throughout the matrix, resulting in a significant increase in microhardness and tensile strength. Cold working prior to aging was effective in strengthening Cu-5Ni-10Sn alloy, which gave rise to a maximum tensile strength of 1165 MPa. Subsequent aging treatment slightly reduced the tensile strength to 1000-1100 MPa due to annealing effects.
Abstract
In this study, Cu-5Ni-10Sn(wt%) spinodal alloy was manufactured by gas atomization spray forming, and the microstructural features and mechanical properties of Cu-5Ni-10Sn alloy have been investigated during homogenization,cold working and age-hardening. The spray formed Cu-5Ni-10Sn alloy consisted of an equiaxed microstructure with a mixture of solid solution α-(CuNiSn) grains and lamellar-structure grains. Homogenization at 800oC and subsequent rapid quenching formed a uniform solid solution α-(CuNiSn) phase. Direct aging at 350oC from the homogenized Cu-5Ni-10Sn alloy promoted the precipitation of finely distributed γ' or γ-(Cu,Ni)3Sn phase throughout the matrix, resulting in a significant increase in microhardness and tensile strength. Cold working prior to aging was effective in strengthening Cu-5Ni-10Sn alloy, which gave rise to a maximum tensile strength of 1165 MPa. Subsequent aging treatment slightly reduced the tensile strength to 1000-1100 MPa due to annealing effects.
참고문헌 (17)
- W. A. Soffa, , Prog. Mater. Sci., 49, pp.347~ (2004)
- F. Kohler, , Acta Mater, 57, pp.56~ (2009)
- J. D. Hwang, , J. Mater. Eng. Perform., 7, pp.495~ (1998)
- 심상현, "분무주조에 의해 제조된 Cu-Sn계 합금의 미세조직 및 인장성질", 한국분말야금학회지, 17(6), pp.477~481 (2010), 한국분말야금학회
- L. H. Schwartz, , Acta. Metall., 22, pp.601~ (1974)
- R. K. Ray, , Metall. Trans, 13, pp.565~ (1982)
- S. Suzuki, , J. Alloys Compounds, 417, pp.116~ (2006)
- V. C. Srivastava, , J. Mater. Proc. Tech., 147, pp.174~ (2004)
- D. Zhao, , Mater. Sci. Eng. A, 361, pp.93~ (2003)
- P. Kratochvil, , Acta Metall, 32, pp.1493~ (1984)
- P. Sahu, , J. Alloys Comp., 377, pp.103~ (2004)
- J. C. Zhao, , Acta Materialia, 46, pp.4203~ (1998)
- P. Virtanen, , Mater. Sci. Eng. A, 251, pp.269~ (1998)
- Y. C. Jung, , J. Kor. Inst. Met. Mater., 36, pp.1~ (1998)
- B. Cantor, , Prog. Mater. Sci., 42, pp.373~ (1997)
- P. S. Grant, , Prog. Mater. Sci., 39, pp.497~ (1995)
- K. H. Baik, , Acta Materialia, 52, pp.199~ (2004)