Study on the Crack Formation Mechanism of Micro-alloyed Steel Slab during Hot Delivery Process

机译：热递送过程中微合金钢板坯裂纹形成机理研究

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Based on experimental investigation of precipitates behavior, formation mechanism on hot delivery crack of microalloy steel was analyzed by binding microstructure evolution and thermal stress changing. The results show that different conveied way and different hot charging temperature are effect significantly on precipitates behavior in charging slab. The hot delivery crack of microalloy steel was formed by resultant force of precipitates behavior, microstructure evolution and thermal stress changing. The microstructure evolution that it is the formation of pro-eutectoid ferrite omentum on austenitic grain boundaries in Ar1~Ar3 is the leading role on formation of hot delivery crack. It is supply conditions for precipitated particles distributed along the austenitic grain boundaries and formation of hot delivery crack of microalloy steel.

机译：基于沉淀物行为的实验研究，通过结合微观结构演化和热应力改变，分析了微合金钢热输送裂纹的形成机制。结果表明，在充电板上的沉淀物行为上显着影响了不同的刚性膨胀方式和不同的热充电温度。通过沉淀物行为，微结构演化和热应力变化，形成微合金钢的热输送裂缝。其在Ar1〜Ar3中奥氏体晶界形成促射胶石铁氧体网膜的微观结构演化是对热输送裂纹形成的主要作用。它是沿奥氏体晶界分布的沉淀颗粒的供应条件，以及微合金钢的热输送裂缝的形成。

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《International Conference on Chemical Engineering and Advanced Materials》|2012年||共7页
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Zhenghai Zhu; Shengtao Qiu;
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中图分类 71.22083;
关键词
microalloy steel; slab; hot delivery crack; precipitate;

机译：微合金钢;平板;热输送裂缝;沉淀物;

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2. Study on Hot Deformation Cracks of Steel D2 Using Processing Map [J] . Gao Shan, Liu Xianghua, Wang Guodong Journal of Iron and Steel Research International . 1997,第2期

机译：D2钢热变形裂纹的加工图研究
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机译：中碳钢连铸坯表面纵裂纹形成机理
4. Study on the Crack Formation Mechanism of Micro-alloyed Steel Slab during Hot Delivery Process [C] . Zhenghai Zhu, Shengtao Qiu International Conference on Chemical Engineering and Advanced Materials . 2012

机译：热递送过程中微合金钢板坯裂纹形成机理研究
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6. Analysis of Deformation and Prediction of Cracks in the Cogging Process for Die Steel at Elevated Temperatures [O] . Marcin Kukuryk 2020

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7. Crack-free processing of hot-pressed silicon nitride ceramics using pulsed YAG laser. (2nd report. Analysis on transient thermal stress and crack formation mechanism in laser-processing of silicon nitride ceramics). [O] . Noboru MORITA, Takehiro WATANABE, Yoshitaro YOSHIDA 1991

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8. Crack Arrest Fracture Toughness Measurements of Normalized and Inclusion ShapeControlled AAR TC128 Grade B Steel, and Micro-Alloyed, Control-Rolled, and Inclusion Shape Controlled A 8XX Grade B Steel [R] . Hicho, G. E. 1991

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Study on the Crack Formation Mechanism of Micro-alloyed Steel Slab during Hot Delivery Process

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