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采用Gleeble-1500热模拟试验机进行单向压缩热模拟试验,在实验室轧机上进行了C-Mn钢超细晶中板的轧制,研究了试验钢在形变诱导铁素体相变过程中ZrC粒子对钢的组织细化和力学性能的影响。结果表明:当ZrC粒子的粒径小于1μm时,Orowan强化机制参与材料的强化,导致组织超细化;由于ZrC/奥氏体相界面的不均匀变形,在界面产生形变位错源,使基体中的位错增殖,形成位错胞,因而提高了材料的强度;当ZrC粒子的平均粒径0.4μm、加入量为0.5%时,实验室轧后水冷可获得晶粒尺寸为3.9μm的9 mm中板,材料的抗拉强度约提高51%,综合性能显著提高。
The uniaxial compression thermal simulation test was carried out on a Gleeble-1500 thermal simulation machine. The C-Mn ultrafine steel plate was rolled on a laboratory rolling mill. During the deformation-induced ferrite transformation, Effect of ZrC Particles on Microstructure and Mechanical Properties of Steel. The results show that when the particle size of ZrC particles is less than 1μm, the strengthening mechanism of Orowan participates in the strengthening of the material, resulting in the ultrafine microstructure. Due to the inhomogeneous deformation of the ZrC / austenite interface, a deformed dislocation source is generated at the interface, Dislocation proliferation, the formation of dislocation cells, thereby increasing the strength of the material; when the average particle size of ZrC particles 0.4μm, the addition of 0.5%, the laboratory after rolling cooling to obtain a grain size of 3.9μm 9 mm in the board, the tensile strength of the material increased by about 51%, the overall performance was significantly improved.