Chakrabortya, J. ; Bhattacharjee, D. ; Manna, I. (2009) Development of ultrafine bainite+martensite duplex microstructure in SAE 52100 bearing steel by prior cold deformation Scripta Materialia, 61 (6). pp. 604-607. ISSN 1359-6462
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S13596...
Related URL: http://dx.doi.org/10.1016/j.scriptamat.2009.05.035
Abstract
We explore microstructural refinement through complete/partial recrystallization of prior cold-deformed ferrite during austenitizing or austempering of SAE 52100 steel to obtain ultrafine bainite and martensite. Optical and scanning/transmission electron microscopy coupled with compositional microanalysis were employed to determine the volume fraction and dimension (thickness/length) of ferritic sheaves and carbides. Characterization of mechanical properties indicates that 5-15% cold deformation significantly enhances the impact strength (~72J) with marginal improvement in hardness and tensile strength over that in the undeformed condition.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Cold Working; Bainitic Steel; Microstructure; Martensite; Mechanical Properties |
| ID Code: | 18915 |
| Deposited On: | 17 Nov 2010 13:26 |
| Last Modified: | 06 Jun 2011 04:32 |
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