An assessment of static recrystallization in L-605 Cobalt-based superalloy
Keywords:recrystallization, annealing, cold rolling, grain size, L-605 superalloy
AbstractIn this research, the effect of cold rolling, annealing time and temperature on microstructure and hardness were studied in L-605 superalloy. A cast bar of L-605 alloy was hot rolled at 1200 ºC. As the following, it was solutionized at 1230 ºC for 1 hour and finally was cold rolled by different amounts (i.e. 5-35 percent thickness reduction). The cold-rolled samples were heat treated for different times (i.e. 2-120 min.) at temperature range of 1068-1230 ºC in order to study their recrystallization behavior. The results of microstructural analysis indicated that static recrystallization is responsible for microstructural refinement and coarsening, so that an increase in the amounts of cold rolling resulted in a fully recrystallized microstructure at lower temperature. This analysis also indicated that annealing temperature is more effective than annealing time in grain growth. Microstructural evaluation as well as showed that carbides such as M7C3 and M23C6 which have been reported in some literature were not observed during rolling or annealing in this research. It is perhaps due to usage of high annealing temperatures or possibly due to their very low contents which was not possible for us to evaluate their formation with conventional methods. Hardness results revealed that higher annealing temperature lead to lower hardness values as expected.
G. D. Sandrock, C.W. Andrews: National Aeronautics and Space Administration (NASA), 1971 Feb. 28p. Report NO.: ND-7051.
Y. Wang, J. Zhao, S. Dai, F. Chen, X. Yu, Y. Zhang: J. Mech. Behav. Biomed. Mater, 27 (2013) 33-42.
H.W. Hayden, S.G. Moffat, J. Wulff: The structure and properties of materials III, First ed., John Wiley & Sons Inc, New York, 1965.
A. Rollett, F. Humphreys, G.S. Rohrer, M. Hatherly: Recrystallization and related annealing phenomena, 2nd Edition, Elsevier Science Ltd, Amsterdam, 2004, 341-365.
J. Favre, Y. Koizumi, A. Chiba, D. Fabregue, E. Maire, In: 3rd International Symposium on High Temperature Metallurgical Processing, Eds: T. Jiang, J.Y. Hwang, Patrick M asset, O.Yucel, R. Padilla, G. Zhou, John Wiley & Sons Inc, 2012, 257-265p.
D. Hull, D.J. Bacon: Introduction to dislocations, 4th Edition, The UK: BUTTERWORTH-HEINEMANN, University of Liverpool, 2009, 235-275.
G.E, Dieter, D. Bacon: Mechanical metallurgy, McGraw-Hill book company, The United States of America, 1986, 162-170.
J. Teague, E. Cerreta, M. Stout: Metall. Mater. Trans. A, 35 (2004) 2767-2781.
N. Yukawa, K. Sato, In: Proceedings of International Conference on Strength of Metals and Alloys I (ICSMA I). Eds: The Japan Institute of Metals. Omachi, 1968, 680-86p.
R. Sandstrom, R. Lagneborg: Acta. Met, 23 (1975) 387-398.
W. Roberts, B. Ahlblom: Acta. Met, 26 (1978) 801-813.
K. Song, M. Aindow: Mater. Sci. Eng A-Struct, 479 (2008) 365-372.
J. Harase, R. Shimizu: J. Magn. Magn. Mater, 254-255 (2003) 343-345.
K.J. Ko, J.T. Park, J.K. Kim, MN. Hwang: Scr. Mater, 59 (2008) 764-767.
J. Harase, R. Shimizu: J. Magn. Magn. Mater, 215-216 (2000) 89-91.
Y. Hayakawa, J. Szpunar: Acta. Met, 45 (1997) 4713-4720.
M. Hosseinifar, S. Asgari: Mater. Sci. Eng A-Struct, 527 (2010) 7313-7317.
Y. Lin, M.S. Chen, J. Zhong: J. Mater. Process. Technol, 209 (2009) 2477-2482.
R.D. Doherty: Prog. Mater. Sci, 42 (1997) 39-58.
R.W. Honeycombe: The plastic deformation of metals. 2nd Edition, Edward arnold, London, 1975.
T. Ericsson: Acta. Met, 14 (1966) 853-865.
P. Huang, H. Lopez: Mater. Lett, 39 (1999) 244-248.
S. Asgari, E. El-Danaf, E. Shaji E, S.R. Kalidindi, R.D. Doherty: Acta Met, 46 (1998) 5795-5806.
Y. Koizumi, S. Suzuki, K. Yamanaka, B.S. Lee, K. Sato, Y. Li, S. Kurosu, H. Matsumoto, A. Chiba: Acta Met, 61 (2013) 1648-1661.
K. Yamanaka, M. Mori, Y. Koizumi, A. Chibaet: J. Mech. Behav. Biomed. Mater, 32 (2014) 52-61.
H. Tawancy, V. Ishwar, B. Lewis: Mater. Lett, 5 (1986) 337-341.
How to Cite
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
- Authors are permitted and encouraged to post their published articles online (e.g., in institutional repositories or on their website, social networks like ResearchGate or Academia), as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
Except where otherwise noted, the content on this site is licensed under a Creative Commons Attribution 4.0 International License.