Evaluation of the surface of alloy tool steel treated by cavitation shotless peening using an eddy current method
Evaluation of the surface of alloy tool steel treated by cavitation shotless peening using an eddy current method
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DOI：
10.1016/j.surfcoat.2009.02.018
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发表时间：
2009-05
影响因子：
5.4
通讯作者：
Y. Sekine;H. Soyama
中科院分区：
文献类型：
--
作者：
Y. Sekine;H. Soyama
合金工具钢热锻模具的空蚀无喷丸（CSP）强化是一种有效的强化方法，它不仅能提高材料的疲劳强度，而且能在材料中引入残余压应力，使材料加工硬化，因此需要一种快速、无损的方法来评价模具的喷丸强化强度。本文采用涡流法研究了CSP工艺时间对合金工具钢SKD61电磁性能的影响。感应应力和微观结构的变化取决于CSP处理时间，这些影响材料的电磁性能，如电导率和磁导率。通过使用涡流法测量这些电磁性能来评估喷丸强度。
Cavitation shotless peening (CSP) of hot forging die made of alloy tool steel is an effective peening method because it increases the fatigue strength of the material, and both introduces compressive residual stress into the material and also work hardens it. In order to evaluate the peening intensity of the die, a quick non destructive method is needed. In this paper, the dependence of the electromagnetic properties of an alloy tool steel, Japanese Industrial Standard (JIS) SKD61, on CSP processing time was investigated using an eddy current method. The induced stress and changes in the microstructure depend on CSP processing time, and these affect the electromagnetic properties of the material, such as the electrical conductivity and the permeability. The peening intensity was evaluated by measuring these electromagnetic properties using the eddy current method.