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分别对不同初始晶粒尺寸的冷轧及冷轧后经回复的纯 Cu进行了激光超快速加热再结晶处理发现细晶冷轧样品完全再结晶时其织构由立方与冷轧织构组分构成,而粗品样品为单一的立方织构;经低温回复的样品再结晶后的立方织构强度明显高于未经回复的样品.冷轧样品经短时(11.25 ms)激光加热,金相组织仍呈冷轧状态,而冷轧织构强度显著降低,未发现立方织构增强、分析认为,在激光加热条件下,再结晶初期各取向晶粒形核机会都增加,限制了立方晶粒形核的优势,而立方晶粒的优势生长则依然存在
The ultra-rapid laser heating recrystallization of pure Cu with different initial grain sizes after cold rolling and cold rolling was carried out. The results show that the texture of pure cold-rolled samples is completely recrystallized from cubic and cold-rolled texture components , While the crude sample is a single cubic texture. The cubic texture after recrystallization of the sample recovered at low temperature is significantly higher than that of the non-recovered sample. Cold-rolled samples were short-tempered (11.25 ms) laser heating, the microstructure is still cold-rolled state, while the cold-rolled texture strength decreased significantly, did not find the cubic texture enhanced, the analysis shows that the laser heating conditions, and then In the early stages of crystallization, the chances of nucleation are increased, which limits the advantages of cubic nucleation and the dominant growth of cubic grains still exists