Influence of the Al content on the phase transformations in Cu-Al-Ag alloys

Main Article Content

Antonio Tallarico Adorno
Assis Vicente Benedetti
Ricardo Alexandre Galdino da Silva
Matildes Blanco

Abstract

The influence of the Al content on the phase transformations in Cu-Al-Ag alloys was studied by
classical differential thermal analysis (DTA), optical microscopy (OM) and X-ray diffractometry (XRD).
The results indicated that the increase in the Al content and the presence of Ag decrease the rate of the
β1 phase decomposition reaction and contribute for the raise of this transition temperature, thus decreasing
the stability range of the perlitic phase resulted from the b1 decomposition reaction.

Metrics

Metrics Loading ...

Article Details

How to Cite
Adorno, A. T., Benedetti, A. V., da Silva, R. A. G., & Blanco, M. (2003). Influence of the Al content on the phase transformations in Cu-Al-Ag alloys. Eclética Química, 28(1), 33–38. https://doi.org/10.26850/1678-4618eqj.v28.1.2003.p33-38
Section
Original articles

References

ADORNO, A. T.; GUERREIRO, M. R.; BENEDETTI,

A. V. Influence of silver additions on the aging characteristics

of the Cu-10.4at.%Al alloys. J. Alloys Comp., v. 268, p.

-129, 1998.

]ADORNO, A. T.; GUERREIRO, M. R.; BENEDETTI,

A. V. Thermal behavior of Cu-Al alloys near the α-Cu-Al

solubility limit. J. Thermal Anal. Cal., v. 65, p. 221-229,

ADORNO, A. T.; GUERREIRO, M. R.; RIBEIRO, C.

A.; GUERREIRO, C. T. R. Influence of silver additions on

the thermal behavior of the Cu-8wt.%Al alloy. J. Thermal

Anal. Cal., v. 64, p. 1141-1146, 2001.

ARRUDA, G. J.; ADORNO, A. T.; MAGNANI, R.;

BEATRICE, C. R. S. Kinetics of eutectoid decomposition

in Cu-Al and Cu-Al-Ag alloys. Mater. Lett., v. 32, p. 79-84,

COPE, R. G. The tempering of martensite in copper-

aluminum alloys. J. Inst. Metals, v. 87, p. 330-336, 1959.

GAUDIG, W.; WARLIMONT, H. The structure of short

range ordered α-Cu-Al alloys and a new superlattice phase.

Acta Metall., v. 26, p. 709-724, 1978.

KWARCIAK, J. Phase transformation in Cu-Al and

Cu-Zn-Al alloys. J. Thermal Anal., v. 31, p. 559-566, 1986.

KWARCIAK, J.; BOJARSKI, Z.; MORAWIEC, H. Phase

transformation in martensite of Cu-12.4%Al. J. Mater.

Sci., v. 21, p. 788-792, 1986.

[ 9] MASSALSKI, T. B. (Ed.). Binary

alloy phase diagrams 2nd. ed. Metals Park: American Society for Metals, v.1,

p.141-143, 1992.

MURRAY, J. L. The aluminum-copper system. Int.

Met. Rev., v. 30, p. 211-233, 1985.

RUZZANTES, J. E.; KUROKAWA, S.; GARCÌA, E.

A.; DYMENT, F. Diffusion in the β/γ2 interphase boundary

of the Cu-Al system. Acta Metall., v. 28, p. 699-707, 1980.

SWANN, P. R.; WARLIMONT, H. The electron

metallography and crystallography of copper-aluminum

martensites. Acta Metall., v. 11, p. 511-527, 1963