Texture evolution of deep-drawing sheet St15 during recrystallizaiton annealing
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摘要: 運用電子背散射花樣技術(EBSP)對本鋼深沖板St15再結晶退火過程中的織構演變規律進行了研究.當加熱速率為30℃/h時,深沖板St15再結晶開始溫度在560℃左右,再結晶完成時間約為2h,最強織構組分為{100}<110>.隨著溫度的升高,深沖板St15的γ纖維織構,尤其是{111}<112>織構有所增強.當保溫溫度為700℃,隨保溫時間延長,深沖板St15的{111}<110>織構明顯增強,4h后{111}<112>織構開始逐漸增強,到13h時,獲得理想的退火織構.Abstract: Electrical back scatter pattern (EBSP) was used to investigate the texture evolution rule of deep-drawing sheet St15 during recrystallization annealing. When the heating rate is 30℃/h, the recrystallization temperature of deep-drawing sheet St15 is about 560℃, the recrystallization finishing time is nearly 2 h, and the strongest component of the recrystallization texture is {100}<110>. γ fibre texture in St15, especially {111}<112>, strengthens with incresing the annealing temperature. When the holding temperature is 700℃, {111}<110> texture in St15 strengthens with increasing the annealing time, and after holding for 4h{111}<112> texture gradually. When the holding time reaches 13 h, a satisfied annealing texture is achieved.
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Key words:
- deep-drawing sheet /
- texture /
- recrystallization annealing /
- EBSP
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