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The effect of direct and cross-rolling on mechanical properties and microstructure of severely deformed aluminum

Mamaghani, K. R ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1007/s11665-013-0742-5
  3. Abstract:
  4. Severely deformed commercial pure aluminum sheets by constrained groove pressing are direct and crossrolled. The grain size evolution and dislocation density during rolling are studied using Williamson-Hall analysis on x-ray diffraction patterns of the deformed samples. These results and optical microscopy observations show that subsequent direct or cross-rolling of constrained groove pressed aluminum can produce elongated fine grains. The minimum crystallite size is achieved after cross-rolling of constrained groove pressed samples. By direct-rolling or cross-rolling of annealed sheet, the maximum intensity in x-ray diffraction patterns remains on (200) like annealed aluminum but direct-rolling or cross-rolling of constrained groove pressed sheets changes the maximum intensity from (111) for constrained groove pressed sheets to (220). Also, mechanical properties are studied using tensile test and hardness measurement. The results show that cross-rolling on constrained groove pressed samples is more effective than direct-rolling in mechanical properties improvement
  5. Keywords:
  6. Cross-rolling ; Direct-rolling ; Microstructure ; Severe plastic deformation ; X-ray diffraction ; Aluminum sheet ; Diffraction patterns ; Interferometry ; Mechanical properties ; Tensile testing ; Commercial pure aluminum ; Constrained groove pressing ; Properties and microstructures ; Properties improvements ; Severe plastic deformations ; Williamson-Hall analysis ; Aluminum
  7. Source: Journal of Materials Engineering and Performance ; Vol. 23, Issue 1 , 2014 , pp. 115-124 ; ISSN: 10599495
  8. URL: http://link.springer.com/article/10.1007%2Fs11665-013-0742-5