升溫速率對非方向性電磁鋼片集合組織的影響

Effect of Heating Rate on the Development of Annealing Texture of Nonoriented Electro-Magnetic Steel

巫淑宇 ； 林俊宏 ； 高伯威 ； 張六文

《鑛冶：中國鑛冶工程學會會刊》 57卷4期 (2013/12) Pp. 97-105

https://doi.org/10.30069/MM.201312_57(4).0009

摘要

本研究旨在探討退火升溫速率對非方向性電磁鋼片再結晶集合組織演化的影響，以0.5℃／s與15℃／s升溫速率分別在590～900℃區間進行熱處理。並以再結晶分率與平均晶粒徑為基準，討論升溫速率對再結晶以及晶粒成長階段集合組織的影響。完全再結晶結果顯示，不同升溫速率對平均晶粒徑影響不大，此外在兩升溫速率條件之下，再結晶各階段的集合組織演化幾乎相同。因此推論再結晶集合組織的演化主要由冷軋之微結構決定，退火升溫速率的影響不明顯。晶粒成長階段的巨觀集合組織顯示，慢速升溫條件的Goss隨著平均晶粒徑增加產生快速下降之現象。

關鍵字

非方向性電磁鋼片 ； 再結晶 ； 集合組織

並列摘要

In this study, two heating rates at 0.5℃/s and 15℃/s, were applied to the annealing process in the production of nonoriented electro-magnetic steels (NOES). The effect of heating rate on the texture was analyzed using the recrystallized fraction in the recrystallization stage and the grain size in the grain growth stage. With complete recrystallization, little difference in texture was found on the recrystallized grain size for the two heating rate cases. Result of macro-texture analysis showed that the evolution of recrystallized texture was similar for the two heating rate treatments.We concluded that the recrystallized texture was mainly determined by the cold-rolled microstructure. For the grain growth stage, the Goss component {011}＜100＞decreased much faster in the slow heating rate case.

並列關鍵字

non-oriented electrical steels (NOES) ； recrystallization ； texture