| تعداد نشریات | 24 |
| تعداد شمارهها | 888 |
| تعداد مقالات | 7,930 |
| تعداد مشاهده مقاله | 14,948,214 |
| تعداد دریافت فایل اصل مقاله | 12,694,144 |
The Effect of Hot Deformation Parameters on Grain Size Refinement in a Martensitic Stainless Steel | ||
| Iranian Journal of Materials Forming | ||
| مقاله 3، دوره 4، شماره 2، دی 2017، صفحه 25-36 اصل مقاله (1.67 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22099/ijmf.2017.4290 | ||
| نویسندگان | ||
| R. Mohammadi Ahmadabadi* 1؛ M. Naderi2؛ J. Aghazadeh Mohandesi3؛ J. Cabrera4 | ||
| 1Amirkabir university of technology | ||
| 2Department of Mining and Metallurgical Engineering, Amirkabir University of Technology | ||
| 3ِDepartment of Mining and Metallurgical Engineering, Amirkabir University of Technology | ||
| 4Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica, ETSEIB, Universidad Politécnica de Catalunya | ||
| چکیده | ||
| The grain size refinement of AISI 422 martensitic stainless steel in the temperature range of 950-1150 ºC was investigated by hot deformation tests. The deformed specimens were held at deformation temperature with delay times of 5 to 300s after achieving a strain of 0.3. The austenite grains exhibit a considerable growth at temperature higher than 1050˚C, while the grain coarsening is negligible at lower deformation temperatures. Therefore, it is a difficult task to achieve a fine grain structure at these high deformation temperatures. In the second stage of this work, the grain growth behavior of the deformed alloy at temperature range of 940-1020 ºC was investigated to obtain a fine austenite grain in the final deformation step. A uniform and fine-grain structure, with average grain size less than 30 µm, can be obtained by considering the appropriate temperature and strain per pass. At 1020˚C a relatively fine and uniform recrystallized grain, mean grain size of about 28 µm, is obtained with an applied strain of 0.4, while at 980˚C after strain of 0.2 a nearly equiaxed grain with the same mean grain size is achieved. | ||
| کلیدواژهها | ||
| Hot deformation؛ AISI 422 steel؛ Grain refinement؛ Recrystallization process | ||
|
سایر فایل های مرتبط با مقاله
|
||
| مراجع | ||
|
[1] N. Vardar, A. Ekerim, Failure analysis of gas turbine blades in a thermal power plant, Eng. Fail. Anal. 14 (2007) 743–749.
[2] N. V. Dashunin, E. P. Manilova and A. I. Rybnikov, phase and structural transformations in 12% chromium steel ÉP428 due to long-term operation of moving blades, Met. Sci. Heat Treat. 49 (2007) 123-129.
[3] Ch. R. Brooks, J. P. Zhou, Microstructural analysis of an embrittled 422 stainless steel stud bolt after approximately 30 years service in a fossil power plant, Metall. 23 (1989) 27-55.
[4] G. R. Ebrahimi, H. Keshmiri, M. Mazinani, A. Maldar, M. Haghshenas, Multi-stage thermomechanical behavior of AISI410 martensitic steel, Mater. Sci. Eng. A 559 (2013) 520–527.
[5] F. Chen, F. Ren, J. Chen, Zh.Cui1, H. Ou, Microstructural modeling and numerical simulation of multi-physical fields for martensitic stainless steel during hot forging process of turbine blade, Adv. Manuf. Tech. 82 (2016) 85–98.
[6] J. P. Domblesky, L. A. Jackman, R. Shivpuri and B. B. Hendrick, Prediction of grain size during multiple pass radial forging of alloy 718, Superalloys 718,625,706 and Various Derivatives, Edited by E.A. Loria, The Minerals, Metals & Materials Society (1994) 156-165.
[7] M. C. Mataya, D. K. Matlock, Effect of multiple reductions grain refinement during hot working of alloy 718, Superalloy 71 &Merallurgy and Applications Edited by E.A. Loria The Minerals, Metals & Materials Society, (1989) 234-241.
[8] G.R. Ebrahimi, H. Keshmiri, A.R. Maldar and A. Momeni, Dynamic Recrystallization Behavior of 13%Cr Martensitic Stainless Steel under Hot Working Condition, J. Mater. Sci. Technol. 28 (2012) 467-473.
[9] Zh. Zeng, L. Chen, F. Zhu and X. Liu, Static recrystallization behavior of a martensitic heat-resistant stainless steel 403Nb, Acta Metall. Sin.(Engl. Lett.) 24 (2011) 381-389
[10] Y. Cao, H. Di, R. D. K. Misra, X. Yi, J. Zhang, T. Ma, On the hot deformation behavior of AISI420 stainless steel based on constitutive analysis and CSL model, Mater. Sci. Eng. A, 593 (2014) 111–119.
[11] L. Chen, Zh. Zeng, Y. Zhao, F. Zhu and X. Liu, Microstructures and High-Temperature Mechanical Properties of a Martensitic Heat-Resistant Stainless Steel 403Nb Processed by Thermo-Mechanical Treatment, Metall. Mater. Trans. A 45 (2014) 1498–1507.
[12] G. Shen, S.L Semiatin, and R. Shivpuri, “Modeling microstructure development during the forging of Waspaloy, Metall. Mater. Trans. A 26 (1995) 1795-1803.
[13] F. Chen, F. Ren, J. Chen, Zh. Cui, H. Ou, Microstructural modeling and numerical simulation of multi-physical fields for martensitic stainless steel during hot forging process of turbine blade, Advan. Manuf. Tech. 82 (2016) 85–98.
[14] E. I. Poliak and J. J. Jonas, Initiation of dynamic recrystallization in constant strain rate hot deformation, ISIJ Inter. 43 (2003) 684–691.
[15] E. I. Poliak and J. J. Jonas, A one-parameter approach to determining the critical conditions for the initiation of dynamic recrystallization, Acta Materi. 44 (1996) 127–136.
[16] F. Ren, F. Chen and J. Chen, Investigation on Dynamic Recrystallization Behavior of Martensitic Stainless Steel, Adv. Mater. Sci. Eng. (2014) 1-16.
[17] A. Dehghan-Manshadi and P.D Hodgson, Dependency of Recrystallization Mechanism to the Initial Grain Size, Metall. Mater. Trans. A (2008) 664-672.
[18] K. P Raoa, Y. K. Prasad, E. B Hawboltc, Study of fractional softening in multi-stage hot deformation, Mater. Proc. Tech. 77 (1998) 166–174.
[19] H. Mao, R. Zhang, L. Hua, and F. Yin, Study of Static Recrystallization Behaviors of GCr15 Steel Under Two-Pass Hot Compression Deformation, Mater. Eng. perfor. 24 (2015) 930-935.
[20] A. I. Fernandez, B. Lopez, and J. M. Rodriguez-Ibabe, Relationship between the austenite recrystallized fraction and the softening measured from the interrupted torsion test technique, Scripta Mater. 40 (1999) 543–49.
[21] H.J. McQueen and J. J. Jonas, role of the dynamic and static softening mechanisms in multiple hot working, Ameri. Soci. Met. 3 (1985) 410-420. | ||
|
آمار تعداد مشاهده مقاله: 1,280 تعداد دریافت فایل اصل مقاله: 1,233 |
||
