任尚坤,任仙芝,赵珍燕

• 1:南昌航空大学无损检测技术教育部重点实验室

摘要(Abstract)：

研究了45钢圆棒状试样在不同回火条件下的力学性能、磁记忆信号空间分布及其斜率随应力的变化关系,建立了基于磁记忆信号分布梯度|k|和特征磁记忆参量的回火工艺质量和材料性能的检测模型。结果表明,在弹性应力范围内,拉伸磁记忆参量(D)、磁记忆信号梯度都与回火温度具有近似线性关系。利用拉伸磁记忆参量和磁信号分布梯度的平均值,采用多参量综合判定方法,可实现对材料回火温度的准确测定,进而实现对材料力学性能的精确评价。

关键词(KeyWords)： 无损检测;磁记忆检测;热处理;回火组织;残余应力

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51261023)

作者(Author): 任尚坤,任仙芝,赵珍燕

DOI: 10.13289/j.issn.1009-6264.2017-0238

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