Defects Interaction on the Mechanical Properties during Transition Formation of (Mo, Cr)3Si Intermetallic Alloys
Affiliation(s)
1 Centro de Investigación en Ingeniería y Ciencias Aplicadas-FCQ e Ing. UAEM, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, México. 2 Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Cuernavaca, México.
1 Centro de Investigación en Ingeniería y Ciencias Aplicadas-FCQ e Ing. UAEM, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, México. 2 Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Cuernavaca, México.
ABSTRACT
Molybdenum silicides alloys with different Mo and Cr additions were produced by the arc cast method. The microstructure revealed mostly single phase structure. Mechanical properties were evaluated in the alloys, showing a decreasing behavior on microhardness. Fracture toughness values were obtained from cracks produced by Vickers indentation technique, showing that ternary alloying did not have a significant effect. Vacancy studies demonstrated that thermal vacancies along the transition line slightly affected the mechanical behavior.
Molybdenum silicides alloys with different Mo and Cr additions were produced by the arc cast method. The microstructure revealed mostly single phase structure. Mechanical properties were evaluated in the alloys, showing a decreasing behavior on microhardness. Fracture toughness values were obtained from cracks produced by Vickers indentation technique, showing that ternary alloying did not have a significant effect. Vacancy studies demonstrated that thermal vacancies along the transition line slightly affected the mechanical behavior.
KEYWORDS
Physical Properties, Silicides, Microindentation, Fracture Toughness, X-Ray Diffraction (XRD)
Physical Properties, Silicides, Microindentation, Fracture Toughness, X-Ray Diffraction (XRD)
Cite this paper
Rosales, I. and Martínez, H. (2014) Defects Interaction on the Mechanical Properties during Transition Formation of (Mo, Cr)3Si Intermetallic Alloys. Journal of Materials Science and Chemical Engineering, 2, 64-70. doi: 10.4236/msce.2014.211009.
Rosales, I. and Martínez, H. (2014) Defects Interaction on the Mechanical Properties during Transition Formation of (Mo, Cr)3Si Intermetallic Alloys. Journal of Materials Science and Chemical Engineering, 2, 64-70. doi: 10.4236/msce.2014.211009.
References
[1] Vasudevan, A.K. and Petrovic, J.J. (1992) A Comparative Overview of Molybdenum Disilicide Composites. Materials Science and Engineering: A, 155, 1-17.
http://dx.doi.org/10.1016/0921-5093(92)90308-N [2] Petrovic, J.J. and Vasudevan, A.K. (1999) Key Developments in High Temperature Structural Silicides. Materials Science and Engineering: A, 261, 1-5. http://dx.doi.org/10.1016/S0921-5093(98)01043-0 [3] Akinc, M., Meyer, M.K., Kramer, M.J., Thom, J.A., Huebsch, J.J. and Cook, B. (1999) Boron-Doped Molybdenum Silicides for Structural. Materials Science and Engineering: A, 261, 16-23.
http://dx.doi.org/10.1016/S0921-5093(98)01045-4 [4] Schneibel, J.H., Kramer, M.J. and Easton., D.S. (2002) A Mo-Si-B Intermetallic Alloy with a Continuous α-Mo Matrix. Scripta Materialia, 46, 217-221. http://dx.doi.org/10.1016/S1359-6462(01)01227-1 [5] Liu, C.T., Schneibel, J.H. and Heatherly, L. (1999) High Temperature Ordered Intermetallic Alloys VIII. Materials Research Society Symposium Proceedings, 552. [6] Sha, D.M. and Anton, D.L. (1992) Evaluation of Refractory Intermetallics with A15 Structure for High Temperature Structural Applications. Materials Science and Engineering: A, 153, 402-409.
http://dx.doi.org/10.1016/0921-5093(92)90228-S [7] Raj, S.V., Whittenberg, J.D., Zeumer, B. and Sauthoff, G. (1999) Elevated Temperature Deformation of Cr3 Si Alloyed with Mo. Intermetallics, 7, 743-755. http://dx.doi.org/10.1016/S0966-9795(98)00095-8 [8] Raj, S.V. (1995) An Evaluation of the Properties of Cr3Si Alloyed with Mo. Materials Science and Engineering: A, 201, 229-241. http://dx.doi.org/10.1016/0921-5093(95)09767-8 [9] Rosales, I. and Schneibel, J.H. (2000) Stoichiometry and Mechanical Properties of Mo3Si. Intermetallics, 8, 885-889. [10] Fleischer, R.L. and Zabala R.J. (1989) Report No. 89CRD201. General Electric Research & Development Center, Schenectady. [11] Zhu, J.H., Pike, L.M., Liu, C.T. and Liaw, P.K. (1999) Point Defects in Binary Laves Phase Alloys. Acta Materialia, 47, 2003-2018. http://dx.doi.org/10.1016/S1359-6454(99)00090-7 [12] Jordan, J.L. and Deevi, S.C. (2003) Vacancy Formation and Effects in FeAl. Intermetallics, 11, 507-528. [13] Pike, L.M., Chang, Y.A. and Liu, C.I. (1997) Point Defect Concentrations and Hardening in Binary B2 Intermetallics. Acta Materialia, 45, 3709-3719. http://dx.doi.org/10.1016/S1359-6454(97)00028-1 [14] O’Neill, H. (1967) Hardness Measurement of Metals and Alloys. 2nd Edition, Chapman and Hall, London. [15] Laves, F. (1956) Theory of Alloy Phases. American Society for Metals, Philadelphia, 131-133. [16] Ohring, M. (1995) Engineering Materials Science. Academic Press, Waltham.
[1] Vasudevan, A.K. and Petrovic, J.J. (1992) A Comparative Overview of Molybdenum Disilicide Composites. Materials Science and Engineering: A, 155, 1-17.
http://dx.doi.org/10.1016/0921-5093(92)90308-N [2] Petrovic, J.J. and Vasudevan, A.K. (1999) Key Developments in High Temperature Structural Silicides. Materials Science and Engineering: A, 261, 1-5. http://dx.doi.org/10.1016/S0921-5093(98)01043-0 [3] Akinc, M., Meyer, M.K., Kramer, M.J., Thom, J.A., Huebsch, J.J. and Cook, B. (1999) Boron-Doped Molybdenum Silicides for Structural. Materials Science and Engineering: A, 261, 16-23.
http://dx.doi.org/10.1016/S0921-5093(98)01045-4 [4] Schneibel, J.H., Kramer, M.J. and Easton., D.S. (2002) A Mo-Si-B Intermetallic Alloy with a Continuous α-Mo Matrix. Scripta Materialia, 46, 217-221. http://dx.doi.org/10.1016/S1359-6462(01)01227-1 [5] Liu, C.T., Schneibel, J.H. and Heatherly, L. (1999) High Temperature Ordered Intermetallic Alloys VIII. Materials Research Society Symposium Proceedings, 552. [6] Sha, D.M. and Anton, D.L. (1992) Evaluation of Refractory Intermetallics with A15 Structure for High Temperature Structural Applications. Materials Science and Engineering: A, 153, 402-409.
http://dx.doi.org/10.1016/0921-5093(92)90228-S [7] Raj, S.V., Whittenberg, J.D., Zeumer, B. and Sauthoff, G. (1999) Elevated Temperature Deformation of Cr3 Si Alloyed with Mo. Intermetallics, 7, 743-755. http://dx.doi.org/10.1016/S0966-9795(98)00095-8 [8] Raj, S.V. (1995) An Evaluation of the Properties of Cr3Si Alloyed with Mo. Materials Science and Engineering: A, 201, 229-241. http://dx.doi.org/10.1016/0921-5093(95)09767-8 [9] Rosales, I. and Schneibel, J.H. (2000) Stoichiometry and Mechanical Properties of Mo3Si. Intermetallics, 8, 885-889. [10] Fleischer, R.L. and Zabala R.J. (1989) Report No. 89CRD201. General Electric Research & Development Center, Schenectady. [11] Zhu, J.H., Pike, L.M., Liu, C.T. and Liaw, P.K. (1999) Point Defects in Binary Laves Phase Alloys. Acta Materialia, 47, 2003-2018. http://dx.doi.org/10.1016/S1359-6454(99)00090-7 [12] Jordan, J.L. and Deevi, S.C. (2003) Vacancy Formation and Effects in FeAl. Intermetallics, 11, 507-528. [13] Pike, L.M., Chang, Y.A. and Liu, C.I. (1997) Point Defect Concentrations and Hardening in Binary B2 Intermetallics. Acta Materialia, 45, 3709-3719. http://dx.doi.org/10.1016/S1359-6454(97)00028-1 [14] O’Neill, H. (1967) Hardness Measurement of Metals and Alloys. 2nd Edition, Chapman and Hall, London. [15] Laves, F. (1956) Theory of Alloy Phases. American Society for Metals, Philadelphia, 131-133. [16] Ohring, M. (1995) Engineering Materials Science. Academic Press, Waltham.