退火工艺对强塑性变形珠光体钢丝组织和性能的影响

材料热处理学报, 2006, 27(5): 43-45. doi: 10.3969/j.issn.1009-6264.2006.05.011

退火工艺对强塑性变形珠光体钢丝组织和性能的影响

涂益友 ^1, , 刘响亮 ^2, , 蒋建清 ^3, , 蔡磊 ^4, , 卞建春 ^5,

1.东南大学材料科学与工程系,江苏,南京,210096

2.东南大学材料科学与工程系,江苏,南京,210096

3.东南大学材料科学与工程系,江苏,南京,210096

4.江苏法尔胜集团公司,江苏,江阴,214433

5.江苏法尔胜集团公司,江苏,江阴,214433

基金项目: 江苏省科技成果转化专项项目(BA2004019)

关键词：珠光体钢 , 强塑性变形 , 渗碳体回溶 , 退火

Effect of annealing process on microstructure and mechanical properties of severe plastic deformation pearlitic steel wire

用TEM、XRD研究了强塑性变形(ε=2.60)SWRH72A钢丝经不同温度(100-400℃)退火处理后的微观结构变化.XRD分析显示强塑性变形引起SWRH72A钢丝中渗碳体回溶,部分碳原子溶入铁素体形成过饱和铁素体,过饱和铁素体中含碳量约0.34at%.由TEM分析可知强塑性变形钢丝经200-300℃退火,由于渗碳体颗粒的弥散析出,钢丝强度升高到2400MPa.退火温度进一步升高到400℃,渗碳体片开始球化,钢丝强度大幅降低,但塑性显著增加.

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退火工艺对强塑性变形珠光体钢丝组织和性能的影响

Effect of annealing process on microstructure and mechanical properties of severe plastic deformation pearlitic steel wire

参考文献