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OALib Journal期刊
ISSN: 2333-9721
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奥氏体化热处理对冷拉拔珠光体钢丝织构再分布的影响*
Keywords: 金属材料,珠光体钢丝,织构,ebsd,奥氏体化热处理
Abstract:
？采用电子背散射衍射技术(ebsd)研究了冷拔钢丝的织构及奥氏体化热处理后积构的分布,并结合组织形貌的变化研究了冷拔钢丝奥氏体化过程对织构再分布的影响。结果表明:拉拔形变钢丝中珠光体片层转向平行于拉拔轴向排列,形成铁素体<110>丝织构,随着应变量的上升<110>丝织构强度上升。奥氏体化热处理后等轴状珠光体组织保留了部分铁素体<110>丝织构,其织构强度随原应变量增大而上升。随着奥氏体化温度的上升,保留的铁素体<110>丝织构强度下降;随着热处理时间的延长,其强度下降。应变量为2.2的钢丝在850℃保温80min后仍然保留有较强的<110>丝织构。
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