| 引用本文: | 陈磊,闫洪,郑志强,胡小武.盾构刀具用5Cr5MoSiV1钢的奥氏体晶粒长大规律研究[J].材料科学与工艺,2012,20(4):140-143.DOI:10.11951/j.issn.1005-0299.20120426. |
| CHEN Lei,YAN Hong,ZHENG Zhi-qiang,HU Xiao-wu.Study on austenite grain growth behavior of 5Cr5MoSiV1 steel for shield tools[J].Materials Science and Technology,2012,20(4):140-143.DOI:10.11951/j.issn.1005-0299.20120426. |
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| 摘要: |
| 研究了盾构刀具用5Cr5MoSiV1钢淬火时在不同的奥氏体化温度和保温时间下的奥氏体晶粒长大规律.结果表明:在1000~1150℃加热时,试验钢奥氏体的平均晶粒尺寸D-随加热温度T的升高而增大,且二者间的定量关系近似服从Arrhenius关系,合适的奥氏体化温度应选在1000℃左右；该钢在1050℃等温加热时,奥氏体晶粒随保温时间的延长近似呈抛物线关系长大,等温长大指数η接近1/2. |
| 关键词: 淬火 盾构刀具 5Cr5MoSiV1钢 奥氏体晶粒长大 平均晶粒尺寸 |
| DOI：10.11951/j.issn.1005-0299.20120426 |
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| 基金项目:国家自然科学基金资助项目(51165032)；江西省教育厅资助项目(GJJ11269)；江西省高等学校科技创新团队资助项目(00008713). |
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| Study on austenite grain growth behavior of 5Cr5MoSiV1 steel for shield tools |
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CHEN Lei, YAN Hong, ZHENG Zhi-qiang, HU Xiao-wu
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Department of Materials Processing Engineering,School of Mechanical and Electrical Engineering,Nanchang University,Nanchang 330031,China
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| Abstract: |
| Austenite grain growth behavior of 5Cr5MoSiV1 steel for shield tools is investigated at various elevated temperatures and holding for different times in quenching.The results show that when heating within the range from 1000℃ to 1150℃,the average austenite grain size (D-) of tested steel increase with the increase of heating temperature(T),and T dependence of D- obeys Arrhenius equation.The optimum austenitizing temperature is about 1000℃.When the steel was heated at 1050℃,austenite grain grows in a parabolic law with the prolongation of holding time,and isothermal growth exponent close to 1/2. |
| Key words: quenching shield tools 5Cr5MoSiV1 steel austenite grain growth average grain size |
