【摘要】 在实验室条件下模拟罩式退火,运用金相显微镜、扫描电镜、微型控制电子万能实验机和X射线衍射仪研究了08Al冷轧深冲用钢不同退火温度(610～700℃)对其显微组织、力学性能和再结晶织构的影响。结果表明:在实验退火温度下,冷轧板在690℃的组织和综合力学性能最优,{111}<UVW>织构组分的百分含量最高,{111}<UVW>/{001}<110>的比值最大,所以在690℃08Al钢可获得最优的深冲性能。实验用钢在700℃退火组织中出现了大晶粒和对深冲性能有害的半网状和网状渗碳体,因此退火温度应该控制在700℃以下。更多还原

【Abstract】 By simulating production annealing process under laboratory conditions,effects of annealing temperature on microstructure,mechanical property and recrystallization texture of 08Al cold-rolled deep-drawing sheet were investigated by means of optical microscopy(OM),scanning electron microscopy(SEM),tesile tests and X-ray diffraction(XRD).The results show that microstructure and mechanical property of the cold-rolled sheet are the best when annealing at 690 ℃.The volume fraction of {111}<UVW> texture component is the highest and the ratio of {111}<UVW> and {001}<110> is the biggest for the sheet annealed at 690 ℃.It is found that the 08Al steel can obtain excellent deep-drawing property after annealing at 690 ℃.Microstructure of the experimental steel annealed at 700 ℃ presents coarse grains,semi-net and net cementites which are harmful to the deep-drawing property of steel.Therefore the annealing temperature should be controlled under 700 ℃.更多还原