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| 退火温度对S700MC强化效果的影响 | |
| 引用本文： | 李秋寒,郭子峰,郭佳,尼兴,张衍,吕宝锋.退火温度对S700MC强化效果的影响[J].中国冶金,2006,32(8):111-116. |
| 作者姓名： | 李秋寒 郭子峰 郭佳 尼兴 张衍 吕宝锋 |
| 作者单位： | 1.首钢集团有限公司技术研究院薄板研究所, 北京 100043; 2.绿色可循环钢铁流程北京市重点实验室, 北京 100043; 3.北京首钢股份有限公司制造部, 河北 迁安 064404 |
| 摘 要： | 采用退火试验,结合光学显微镜、扫描电镜、透射电镜和显微硬度计等设备,研究了不同退火温度对S700MC强化效果的影响。结果表明,退火处理能够显著影响碳化物形貌及变形区补充析出的细小铌和钛复合相的尺寸及分布。随着退火温度升高,碳化物及变形区补充析出的铌和钛复合相细化,弥散度提高,试样厚度方向上各检测位置的维氏硬度增大,强化效果显著;当退火温度升高至570 ℃时,碳化物及变形区补充析出的铌和钛复合相粗化,强化效果下降;而当退火温度为510 ℃ 时强化效果最佳。 |
| 关 键 词： | 退火温度 维氏硬度 碳化物 析出强化 组织形貌 |
Effect of annealing temperatures on enhancement of S700MC |
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| LI Qiu-han,GUO Zi-feng,GUO Jia,NI Xing,ZHANG Yan,LÜ,Bao-feng.Effect of annealing temperatures on enhancement of S700MC[J].China Metallurgy,2006,32(8):111-116. | |
| Authors: | LI Qiu-han GUO Zi-feng GUO Jia NI Xing ZHANG Yan LÜ Bao-feng |
| Affiliation: | 1. Strip Technology Dept., Research Institute of Technology, Shougang Co., Ltd., Beijing 100043, China; 2. Beijing key Laboratory of Green Recyclable Process for Iron and steel Production Technology, Beijing 100043, China; 3. Manufacturing Dept., Beijing Shougang Co., Ltd., Qian′an 064404, Hebei, China |
| Abstract: | The effects of different annealing temperatures on the enhancement of S700MC steel were studied through annealing experiments in combination with optical microscope, SEM, TEM and hardness tester. The results show that the annealing treatment significantly affects the morphology of carbides as well as the size and distribution of supplementary precipitation of fine composite phase of Nb and Ti in the deformed zones. With the increase of annealing temperature, the fine carbides and supplementary precipitating particles containing Nb and Ti disperse more widely, at the same time the value of Vickers hardness increases at each position in the thickness direction of the sample. The strengthening effect is significant. When the annealing temperature increases to 570 ℃, the carbides and supplementary precipitating particles containing Nb and Ti in the deformed zones coarsen, and the strengthening effect decreases. The optimum strengthening effect is obtained at the annealing temperature of 510 ℃. |
| Keywords: | annealing temperature vickers hardness carbide precipitation strengthening microstructure morphology |
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