کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1448082 | 988664 | 2009 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Relationship between local deformation behavior and crystallographic features of as-quenched lath martensite during uniaxial tensile deformation Relationship between local deformation behavior and crystallographic features of as-quenched lath martensite during uniaxial tensile deformation](/preview/png/1448082.png)
Electron backscattering diffraction patterns were used to investigate the relationship between local deformation behavior and the crystallographic features of as-quenched lath martensite of low-carbon steel during uniform elongation in tensile tests. The slip system operating during the deformation up to a strain of 20% was estimated by comparing the crystal rotation of each martensite block after deformation of 20% strain with predictions by the Taylor and Sachs models. The results indicate that the in-lath-plane slip system was preferentially activated compared to the out-of-lath-plane system up to this strain level. Further detailed analysis of crystal rotation at intervals of approximately 5% strain confirmed that the constraint on the operative slip system by the lath structure begins at a strain of 8% and that the local strain hardening of the primary slip systems occurred at approximately 15% strain.
Journal: Acta Materialia - Volume 57, Issue 18, October 2009, Pages 5283–5291