Artículos de revistas
Grain Size Effect On The Structural Parameters Of The Stress Induced Ehcp - Martensite In Iron-based Shape Memory Alloy
Registro en:
Materials Research. , v. 11, n. 1, p. 63 - 67, 2008.
15161439
10.1590/S1516-14392008000100012
2-s2.0-45149107860
Autor
Nascimento F.C.
Mei P.R.
Cardoso L.P.
Otubo J.
Institución
Resumen
The aim of this work was to study the effect of austenitic grain size (GS) reduction on the structural parameters of the εhcp -martensite in stainless shape memory alloy (SMA). Rietveld refinement data showed an expansion in c-axis and a reduction in a and b-axis with thermo-mechanical cycles for all samples analyzed. Samples with 75 ≤ GS (μ) ≤ 129 were analyzed. It was also observed an increase of the unit cell volume in this phase with GS reduction. The smallest grain size sample (GS = 75 μm) presented a c/a ratio of 1.649, and approximately 90% of total shape memory recovery. 11 1 63 67 Sato, A., Chishima, E., Soma, K., Mori, T., Shape memory effect in γ↔ε transformation in Fe-30Mn- 1Si alloy single crystals (1982) Acta Metallurgica, 30, pp. 1177-1183 Sato, A., Mori, T., Development of a shape memory alloy Fe - Mn - Si (1991) Materials Science and Engineering A, 146 (1-2), pp. 197-204 Otsuka, H., Yamada, H., Maruyama, T., Tamahashi, H., Matsuada, S., Murakami, M., Effects of Alloying Additions on Fe-Mn-Si Shape Memory Alloys (1990) ISIJ International, 30 (8), pp. 674-679 Otubo, J., Nascimento, F.C., Mei, P.R., Cardoso, L.P., Kaufman, M., Influence of austenite grain size on mechanical properties of stainless shape memory alloy (2002) Materials Transactions JIM, 43 (5), pp. 916-919 Christian, J.W., A theory of the transformation in pure cobalt (1951) Proceedings of the Royar Society of London. Seires A. Mathematical and Physical Sciences, A203 (1084), pp. 51-64 Seeger A. Versetzungen und allotrope umwandlungen. Zeitschrift für Metalikunde. 1953 44: 247-255NascimentoFC. Efeito do tamanho de grão nas propriedades mecânicas e na tecuperação de forma de ligas inoxidáveis com efeito de, memória de forma. [Thesis] Campinas, Brazil: Unicamp 2002 p. 01-138Jang, W.Y., Gu, Q., Van Humbeeck, J., Delay, L., Microscopic observation of γ-phasa and ε- and α-martensite in Fe-Mn-Si-based shape memory alloys (1995) Materials Characterization, 34, pp. 67-72 Bergeon, N., Guenin, G., Esnouf, C., Characterization of the stress-induced s-martensite in a Fe-Mn-Si-Cr-Ni shape memory alloy: Microstructural observation at different scales, mechanism of formation and growth (1997) Materials Science and Engineering A, 238, pp. 309-316 Bergeon, N., Guenin, G., Esnouf, C., Microstructural of the stress-induced ε-martensite in a Fe-Mn-Si-Cr-Ni shape memory alloy: Part I- calculate description of the microstructure (1998) Materials Science and Engineering A, 242, pp. 77-86 Bergeon, N., Guenin, G., Esnouf, C., Microstructural of the stress-induced ε martensite in a Fe-Mn-Si-Cr-Ni shape memory alloy: Part II-Transformation reversibility (1998) Materials Science and Engineering A, 242, pp. 87-95 Li, H., Dunne, D., Kennon, N., Factors influencing shape memory effect and phase transformation behaviour of Fe-Mn-Si based shape memory alloys (1999) Materials Science and Engineering A, pp. 273-275,517-523 Otubo, J., Mei, P.R., Shinohara, A.H., Suzuki, C.K., Koshimizu, S., Relations between thermomechanical treatment, microstructure and α martensite in Fe based stainless shape memory alloys (1999) Materials Science and Engineering A, 273, pp. 533-537 Murakami, M., Suzuki, H., Nakamura, Y., Effect of Si on the shape memory effect of polycrystallin Fe-Mn-Si alloys (1987) Materials Transactions, 27, pp. 87-96 Nascimento, F.C., Mei, P.R., Otubo, J., Effects of grain size on the shape recovering properties of a stainless SMA (2003) Proceedings of Conference Advances in Materials and Processing Technologies, pp. 1436-1440. , Las Vegas Sato, A., Matsuya, T., Morishita, M., Kumai, S., Inoue, A., Strengthening of Fe-Mn-Si based shape memory alloys by grain size refinement (2000) Shape Memory Materials, pp. 223-226 Matsuya, T., Yoneyama, N., Kumai, S., Sato, A., Grain size effect on the microstructure of deformed Fe-Mn-Si based shape memory alloys (2000) Shape Memory Materials, 323 (3), pp. 267-270 Airapour, A., Yakubtsov, I., Perovic, D.D., Effect of nitrogen on shape memory effect of a Fe-Mn-based alloy (1999) Materials Science and Engineering A, 262, pp. 39-49 Nascimento, F.C., Sorrila, F.V., Otubo, J., Mei, P.R., Stainless shape memory alloys microstructure analysis by optical microscopy using different etchants (2003) Acta Microscopica, 12 (1), pp. 99-105 Gu, Q., Humbeeck, V., Delaey, L., Guénin, G., Gex, D., Effect of amount of deformation on the martensitic transformation and shape memory effect in Fe-Mn-Si based shape memory steel (1995) Journal de Physique IV, 5, pp. 311-315 Rietveld HMA profile refinement method for nuclear and magnetic structures. Journal of Applied Crystallography. 1969 2: 65-71Carvajal, J.R., An introduction to the program FullProf (2000) Laboratoire Léon [Manual] Brillouin, , França, Versão julho Bueno, J.C., Nascimento, F.C., Mei, P.R., Otubo, J., Stress induced martensite morphology in stainless shape memory alloys (2003) Acta Microscopica, 12, pp. 223-224 Venables, J.A., Nucleation + propagation of deformation twins (1964) Philosophical Magazine, 25 (7), pp. 693-695 Fujita, H., Katayama, T., In-situ Observation of Strain-Induced γ→ε→α, and γ→α' Martensitic Transformations in Fe-Cr-Ni Alloys (1992) Materials Transactions JIM, 33 (3), pp. 243-252 Gauzzi, F., Montanari, R., Martensite reversion in an Fe-21%Mn-0.1%C alloy (1999) Materials Science and Engineering A, pp. 273-275,524-527 Chanda, A., Pal, H., De, M., Kajiwara, S., Kikuchi, T., Characterization of microstructure of isothermal martensite formed at low temperature in powder of Fe-23Ni-3.3Mn alloy by Rietveld method (1999) Materials Science and Engineering A, 265, pp. 110-116 Jee, K.K., Baik, S.H., Lee, B.J., Shin, M.C., Choi, C.S., Jee, K.K., Measurement of volume fraction of stress-induced ε martensite in Fe32Mn6fSi alloy (1995) Scripta Metallurgica at Materialia, 33 (12), pp. 1901-1905 Qingsuo, L., Shihong, M., Naju, G., The γ→ ε-martensitic transformation and its reversion in the FeMnSiCrNi shape-memory alloy (1998) Metallurgical and Materials Transactions A, 29 A, pp. 1579-1583 Sahu, P., De, M., Kajiwara, S., Microstructural characterization of stress-induced martensites evolved at low temperature in deformed powders of Fe-Mn-C alloys by the Rietveld method (2002) Journal of Alloys and Compounds, 346 (1-2), pp. 158-169