主要通过实验室模拟工业罩式退火工艺,研究不同退火温度对Q235冷轧板的组织与性能的影响.通过光学显微镜观察不同退火温度下铁索体的晶粒长大情况,结果显示:晶粒尺寸随退火温度升高而增加,当退火温度在600～640℃时,横向尺寸长大较缓慢.通过透射电镜观察析出物的形貌并进行物相分析,知析出物为渗碳体.统计析出物在不同退火温度下的尺寸和分布情况.最后通过单向拉伸试验测定伸长率、屈服强度和抗拉强度.
The impact of annealing temperature on mechanical properties of high strength cold rolled plate Q235 was studied. The steel was researched by means of optical microscope. The results show that the grain size of ferrite grow up as annealing temperature increase, but the horizontal grain size grow up more slowly when annealing tem-perature between 600-640 ℃. It is found that there were lots of precipitate particles. The TEM diffraction analysis indicates that the particles are cementite particles. The size distribution of these particles was counted. At last, the mechanical properties of annealed plate were tested by tension test.
参考文献
| [1] | 马璟,关小军,刘清津,张继祥,董安平.IF板与08Al板的成形性能研究[J].山东冶金,2003(06):49-51. |
| [2] | 刘庆国.08Al汽车板的生产[J].钢铁研究,1990(04):91. |
| [3] | 康永林,景钦广,吴光亮,温德智,周春泉.卷取温度、冷轧总变形量对含硼 08Al钢力学性能的影响[J].钢铁,2007(04):67-72,82. |
| [4] | Hu ZC;He CS;Zhao X;Zuo L .Effects of external electric field on recrystallization texture and microstructure of 08Al killed steel sheet[J].Journal of Materials Science,2004(13):4231-4234. |
| [5] | Xiang ZHAO,Zhuochao HU,Liang ZUO.Effects of External Electric Field on AlN Precipitation and Recrystallization Texture of Deep-drawing 08Al Killed Steel Sheet[J].材料科学技术学报（英文版）,2006(06):747-750. |
| [6] | GB/T 6394-2002,金属平均晶粒度测定方法[S].北京:中国标准出版社,2003. |
| [7] | 李明;周海 .08Al钢中AlN析出的晶体学研究及形貌特征分析[J].攀钢技术,1998,21(05):30. |
| [8] | 雍崎龙.钢铁材料中的第二相[M].北京:冶金工业出版社,2006 |
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