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。
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 ℃.
参考文献
| [1] | Guang XU;Yi YANG;Xinqiang ZHANG .Influence of Annealing Technology on Drawing Properties of Cold Sheets Rolled with Compact Strip Production Hot Bands[J].ISIJ International,2007(12):1767-1771. |
| [2] | Cardozo J J;Rivas A L;Colas R .Effect of the annealing conditions on the microstructure and mechanical properties of a 0.04% C A1 killed steel[J].Materials Science Forum,2007,539-543:4208-4213. |
| [3] | M. Jahazi;B. Egbali .The influence of hot rolling parameters on the microstructure and mechanical properties of an ultra-high strength steel[J].Journal of Materials Processing Technology,2000(2):276-279. |
| [4] | Ray R K;Jonas J J;Hook R E .Cold rolling and annealing textures in low carbon and extra low carbon steels[J].International Materials Reviews,1994,39(04):129-172. |
| [5] | Kestens Leo A I;Petrov R .Texture control in manufacturing current and future grades of low-carbon steel sheet[J].British Ceramic Transactions,2008,200:207-216. |
| [6] | 李萧,杨平,林瑞民,刘西峰,陈冷.低碳钢退火板中粗大晶粒成因的EBSD分析[J].电子显微学报,2009(01):34-38. |
| [7] | 尹红国,温德智,吴光亮,陈振华,罗孟良.罩式退火工艺对冷轧板成形性能的影响[J].金属材料与冶金工程,2008(05):3-7. |
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