CAJ | 학술논문

针对连续挤压-冷轧铜板带工艺，分析14 mm ×290 mm的纯铜板坯及其冷轧轧制变形量分别为70％、89％（含退火）共4种铜板的显微组织结构和力学性能。结果表明，挤出板坯的横纵截面组织均为均匀的等轴晶粒，并存在少量的孪晶。随着轧制变形量的增加，纵截面开始逐渐形成冷轧纤维流线，而横截面则形成变形织构，组织不均匀。当轧制变形量达到89％时，板的延伸率低于5％，不利于后续精轧。经退火后重新形成均匀细小的等轴晶粒，延伸率提高到50％以上。板的抗拉强度随变形量的增加而变大，塑性降低，铜板产生了各向异性。
침대련속제압-랭알동판대공예，분석14 mm ×290 mm적순동판배급기랭알알제변형량분별위70％、89％（함퇴화）공4충동판적현미조직결구화역학성능。결과표명，제출판배적횡종절면조직균위균균적등축정립，병존재소량적련정。수착알제변형량적증가，종절면개시축점형성랭알섬유류선，이횡절면칙형성변형직구，조직불균균。당알제변형량체도89％시，판적연신솔저우5％，불리우후속정알。경퇴화후중신형성균균세소적등축정립，연신솔제고도50％이상。판적항랍강도수변형량적증가이변대，소성강저，동판산생료각향이성。
For the continuous extrusion-cold rolling process ,the microstructure and mechanical property of total four kinds of cop-per strips were analyzed with 14mm × 290mm copper slab and cold rolling deformation of 70% and 89% (besides annealing) .The results indicate that uniform equiaxial grains with small amount of twins were distributed along horizontal and vertical section of extruded slab .With the increasing of the rolling deformation ,the cold fibre structure was formed along vertical section ,while in the horizontal section ,the deformation texture was formed and the microstructure is not uniform .When the rolling deformation reached 89% ,the elongation of the strip is below 5% and not good for subsequent finishing .After annealing ,a uniform fine equi-axed grain was obtained and the elongation increased more than 50% . The ultimate strength of strip enhances and the plasticity decreases with the increasing of the deformation .And the strip is anisotropic .