| 唐明华,刘志义*,胡双开.超细第二相粒子强化低碳微合金钢铁材料的研究[J].南华大学学报(自然科学版),2008,22(4):32~36.[TANG Ming-hua1,2,LIU Zhi-yi2*,HU Shuang-kai3.Study of Strengthening Low-Carbon Microalloy Steel by Adding Ultrafine Second-Phase Particles[J].Journal of University of South China(Science and Technology),2008,22(4):32~36.] |
| 超细第二相粒子强化低碳微合金钢铁材料的研究 |
| Study of Strengthening Low-Carbon Microalloy Steel by Adding Ultrafine Second-Phase Particles |
| 投稿时间：2008-11-10 |
| DOI： |
| 中文关键词: ZrC粒子 超细晶粒钢 形变诱导铁素体相变 |
| 英文关键词:ZrC particles ultrafine grain steel deformation-induced ferrite transformation |
| 基金项目:国家自然科学基金资助项目(59971031);湖南省自然科学基金资助项目(05JJ40063). |
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| 中文摘要: |
| 采用Gleeble-1500热模拟试验机进行单向压缩热模拟试验,研究了试验钢在形变诱导铁素体相变过程中ZrC粒子对铁素体晶粒细化的促进作用,结果表明：粒径小于1.0 μm的ZrC粒子作为形变和再结晶核心可以加速铁素体形核,从而细化铁素体晶粒,为提高α-Fe形核率,试验钢获得超细组织的ZrC粒子临界体积分数是0.6%,当ZrC粒子的加入量为0.5%、轧制变形量为0.6时,轧后水冷可获得3～4 μm的超细晶粒组织,抗拉强度约提高70%,材料综合性能显著提高. |
| 英文摘要: |
| The auxo-action of ZrC particles to ferrite grain refining during deformation induced ferrite transformation of the tested steel was investigated by unidirectional compression thermal simulating experiment with Gleeble-1500.The results show that the ZrC particles which radius less-than 1.0 μm as a deformation and recrystallization nucleus can accelerate ferrite nucleating thus refine ferrite grain,and in order to improve α-Fe nucleating rate,the critical volume fraction of ZrC particles is 0.6% which leads to the ultrafine microstructure of the tested steel.When the rolling deformation is 60% and the volume fraction of ZrC particles is 0.5% the fine structure with a grain size of 3～4 μm was obtained,tensile strength was improved 70 percent approximately,and the integrating mechanical properties of the steel are increased obviously. |
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