CAJ | 학술논문

在750、800、825和850℃温度下，利用Gleeble1500热模拟试验机对430不锈钢冷轧薄板的等温退火过程进行了详细的实验研究，分析了退火过程中再结晶织构和组织的变化规律，并对关键织构体积分数的演变进行了定量分析。结果发现：随着退火过程的进行，α取向线上的织构强度逐渐减弱，而酌取向线上的织构强度则略有加强，并保持在较高的值；再结晶过程中，{111}和{112}<110>织构的体积分数逐渐降低，而{100}和随机取向晶粒的体积分数逐渐增加。定量分析表明，退火温度越低，完全再结晶后材料内部关键织构的体积分数越偏离冷轧态。最后，针对{111}、{112}<110>、{100}和随机取向织构的体积分数在再结晶过程中的演变规律，建立了JMAK型再结晶织构演变动力学模型。
재750、800、825화850℃온도하，이용Gleeble1500열모의시험궤대430불수강랭알박판적등온퇴화과정진행료상세적실험연구，분석료퇴화과정중재결정직구화조직적변화규률，병대관건직구체적분수적연변진행료정량분석。결과발현：수착퇴화과정적진행，α취향선상적직구강도축점감약，이작취향선상적직구강도칙략유가강，병보지재교고적치；재결정과정중，{111}화{112}<110>직구적체적분수축점강저，이{100}화수궤취향정립적체적분수축점증가。정량분석표명，퇴화온도월저，완전재결정후재료내부관건직구적체적분수월편리랭알태。최후，침대{111}、{112}<110>、{100}화수궤취향직구적체적분수재재결정과정중적연변규률，건립료JMAK형재결정직구연변동역학모형。
ABSTRACT Variations in the recrystallized texture and microstructure of cold-rolled 430 stainless steel during isothermal annealing were investigated on a Gleeble-1500 thermal-mechanic simulator at 750, 800, 825 and 850℃, and the evolution of main textures was analyzed quantitatively. As annealing proceeds, the intensity of α-fiber orientation components decreases, but the intensity of γ-fiber components increases slightly and maintains at a higher value. The volume fraction of{111} and{112}<110> decreases as recrystal-lization proceeds, while the volume fraction of{100} and random orientation textures increases. Compared with the cold-rolled state, it is observed that the volume fraction of main textures has greater changes in annealing at low temperature than at high temperature. Finally, variations in the volume fraction of{111},{112}<110> ,{100} and random orientation textures during recrystallization were described by a JMAK kinetics model.