Grain refinement of austenitic stainless steels by cross rolling and annealing treatment: A review | ||
| Journal of Ultrafine Grained and Nanostructured Materials | ||
| دوره 57، شماره 2، اسفند 2024، صفحه 112-119 اصل مقاله (2.06 M) | ||
| نوع مقاله: Review Paper | ||
| شناسه دیجیتال (DOI): 10.22059/jufgnsm.2024.02.01 | ||
| نویسندگان | ||
| Sara Mohammadzehi1؛ Hamed Mirzadeh* 2 | ||
| 1University of Tehran College of Engineering | ||
| 2School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran | ||
| چکیده | ||
| The effects of cross rolling and annealing treatment, as an advanced thermomechanical processing route, on the microstructure and grain refinement of metastable austenitic stainless steels were overviewed. It was summarized that cross rolling promotes the formation of intersecting shear bands and leads to higher dislocation density, which are favorable for the formation of strain-induced α′-martensite. Moreover, contrary to unidirectional rolling, cross rolling retains the equiaxed morphology of grains. It was demonstrated and formulated that cross rolling and reversion/recrystallization annealing treatment leads to more intense grain refinement compared to the unidirectional rolling and annealing route, which is quite important for grain refinement of more stable grades. Future prospects include investigating the effects of special alloying elements, initial grain size, and deformation variables on the cross rolled microstructure, analyzing the kinetics parameters of the deformation-induced martensitic transformation during cross rolling, and characterizing the transformation-induced plasticity (TRIP) effect for the grain refined austenitic stainless steels and high-entropy alloys by cross rolling and annealing treatment. | ||
| کلیدواژهها | ||
| Metastable stainless steels؛ Unidirectional rolling؛ Cross rolling؛ Annealing heat treatment؛ Grain refinement | ||
| مراجع | ||
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