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Microstructure evolution and texture formation of 16 % chromium ferritic stainless steel following simulated batch annealing treatments in mass production
Materialwissenschaft und Werkstofftechnik ( IF 0.744 ) Pub Date : 2021-12-15 , DOI: 10.1002/mawe.202100198 Z. Wang 1, 2 , G. Peng 3 , T. He 3 , M. Li 1, 2
Materialwissenschaft und Werkstofftechnik ( IF 0.744 ) Pub Date : 2021-12-15 , DOI: 10.1002/mawe.202100198 Z. Wang 1, 2 , G. Peng 3 , T. He 3 , M. Li 1, 2
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Batch annealing technique is mainly used in industry for improving productivity as a few steel coils were stacked and heated in a bell-type furnace. The microstructure evolution, texture formation and mechanical properties of 16 % chromium ferritic stainless steel under different simulated batch annealing and subsequent cold-rolled annealing conditions were investigated in this work. Results showed that batch annealing process applied in mass production could not produce fully recrystallized and homogenously equiaxed grains even at very high temperatures up to 900 °C for 30 hours. With increased batch annealing temperature, a large number of chromium carbides precipitated in ferrite, while some unstable Fe-carbide precipitates were gradually dissolved. Relatively lower cold-rolled annealing temperature (830 °C) led to finer grains and superior mechanical properties of 16 % chromium ferritic stainless steel. Increased batch annealing temperature improved the intensity of {111}//normal direction γ-fiber textures at the expense of other orientations including {hkl}<110> α-fiber, {334}<4
3>, thus improving the formability of ferritic stainless steel.
中文翻译：
16%铬铁素体不锈钢大规模生产模拟批量退火处理后的显微组织演变和织构形成
批量退火技术主要用于工业中以提高生产率，将少量钢卷堆叠并在钟罩式炉中加热。本文研究了不同模拟间歇退火和后续冷轧退火条件下 16% 铬铁素体不锈钢的组织演变、织构形成和力学性能。结果表明，即使在高达 900°C 的非常高的温度下持续 30 小时，批量生产中应用的批量退火工艺也不能产生完全再结晶和均匀的等轴晶粒。随着间歇退火温度的升高，大量的碳化铬在铁素体中析出，而一些不稳定的碳化铁析出物逐渐溶解。相对较低的冷轧退火温度 (830 °C) 使 16% 铬铁素体不锈钢具有更细的晶粒和优异的机械性能。提高批量退火温度提高了 {111}//法向 γ-纤维织构的强度，但会牺牲其他取向，包括 {hkl}<110> α-纤维、{334}<4
3>，从而提高铁素体不锈钢的成形性。
更新日期：2021-12-15
3>, thus improving the formability of ferritic stainless steel.
中文翻译：
16%铬铁素体不锈钢大规模生产模拟批量退火处理后的显微组织演变和织构形成
批量退火技术主要用于工业中以提高生产率，将少量钢卷堆叠并在钟罩式炉中加热。本文研究了不同模拟间歇退火和后续冷轧退火条件下 16% 铬铁素体不锈钢的组织演变、织构形成和力学性能。结果表明，即使在高达 900°C 的非常高的温度下持续 30 小时，批量生产中应用的批量退火工艺也不能产生完全再结晶和均匀的等轴晶粒。随着间歇退火温度的升高，大量的碳化铬在铁素体中析出，而一些不稳定的碳化铁析出物逐渐溶解。相对较低的冷轧退火温度 (830 °C) 使 16% 铬铁素体不锈钢具有更细的晶粒和优异的机械性能。提高批量退火温度提高了 {111}//法向 γ-纤维织构的强度，但会牺牲其他取向，包括 {hkl}<110> α-纤维、{334}<4
3>，从而提高铁素体不锈钢的成形性。
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