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金属学报  2014 

升温速率对低碳无取向电工钢脱碳退火组织及织构的影响

DOI: 10.11900/0412.1961.2014.00311, PP. 1437-1445

Keywords: 电工钢,柱状晶,组织,织构,升温速率

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Abstract:

研究了不同升温速率下低碳电工钢两相区脱碳退火组织与织构的演变规律.结果表明,脱碳退火升温速率对最终组织和织构均有显著影响升温速率决定了柱状晶的“形核”位置,慢速升温时,柱状晶“晶核”在表层向里的一定范围内形成,最终在样品表面附近形成小尺寸晶粒层,而快速升温则形成完整的柱状晶组织;慢速升温时获得强g线织构及相对较弱的a线织构,而快速升温则使g线织构大幅度减弱,a线组分有所增强,并产生了一定强度的{001}织构.实验结果证明,最终的脱碳退火织构主要取决于“形核”处再结晶晶粒的织构成分.

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