OALib Journal期刊
ISSN: 2333-9721
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低碳钢带铸材的微观组织与塑性异向性
, PP. 6-13
Keywords: 低碳钢,铸钢带,塑性异向性
Abstract:
对比研究了低碳钢带铸材不同处理状态钢带和薄板铸坯中不同位置切片的组织特征、晶体学织构和15%工程应变条件下的塑性异向性。结果表明,带铸材试样中存在{111}与{114}特征织构,织构强度均较弱;铸坯切片中存在{111}与{001}特征织构,并且因局部凝固冷速不同存在明显的织构强度差异。两组低碳钢的法向异向性与平均晶粒尺寸的对数之间尽管均存在线性关系,但斜率明显不同。分析表明法向异向性的晶粒尺寸依存性与钢带中织构的强弱有关,由此提出了“有效织构强度比”的概念,从塑性变形理论的角度解释了微观组织对塑性异向性的影响。
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