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首页> 外文期刊>Journal of Materials Science & Technology >Effect of V and V-N Microalloying on Deformation-Induced Ferrite Tramsformation in Low Carbon Steels
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Effect of V and V-N Microalloying on Deformation-Induced Ferrite Tramsformation in Low Carbon Steels

机译：V和V-N微合金化对低碳钢中形变引起的铁素体形变的影响

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摘要

Deformation-induced ferrite transformation (DIFT) has been proved to be an effective approach to refine ferrite grains. This paper shows that the ferrite grains can further be refined through combination of DIFT and V or V-N microalloying. Vanadium dissolved in 7 matrix restrains DIFT. During deformation, vanadium carbonitrides rapidly precipitate due to strain-induced precipitation, which causes decrease in vanadium dissolved in matrix and indirectly accelerates DIFT. Under heavy deformation, deformation induced ferrite (DIF) grains in V microalloyed steel were finer than those in V free steel. The more V added to steel, the finer DIF grains obtained. Moreover, the addition of N to V microalloyed steels can remarkably accelerate precipitation of V, and then promote DIFT. However, DIF grains in V-N microalloyed steel easily coarsen.
机译：变形诱发的铁素体转变（DIFT）已被证明是细化铁素体晶粒的有效方法。本文表明，通过将DIFT与V或V-N微合金化相结合，可以进一步细化铁素体晶粒。溶于7种基质的钒会抑制DIFT。在变形过程中，由于应变诱导的沉淀，碳氮化钒迅速沉淀，这导致溶解在基体中的钒减少并间接加速DIFT。在大变形下，钒微合金钢中的变形诱导铁素体（DIF）晶粒比不含钒的钢中的晶粒细。添加到钢中的V越多，获得的DIF晶粒越细。此外，向V微合金钢中添加N可以显着加速V的析出，然后促进DIFT。但是，V-N微合金钢中的DIF晶粒容易粗化。

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