Laser Beam Hardening of CVD-coated Steels

被引：4
|
作者：
Heidkamp, M. [1 ]
Kessler, O. [1 ]
Hoffmann, F. [1 ]
Mayr, P. [1 ]
Zoch, H. -W. [1 ]
机构：
[1] Univ Kassel, Inst Werkstofftechn, Kassel, Germany
来源：
HTM-JOURNAL OF HEAT TREATMENT AND MATERIALS | 2005年 / 60卷 / 02期
关键词：
D O I：
10.3139/105.100327
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The properties of hard coatings deposited by using CVD-processes are usually excellent. However, high deposition temperatures may influence the properties of the steel substrates negatively. Therefore, a subsequent heat treatment is necessary to restore the properties of the steel substrates ready for operation, e.g. sheet forming tools in the automotive industry. By the duplex treatment of CVD-coating with laser beam hardening a composite material with a high surface hardness and adapted strength - resp. hardness gradients from the interface to the core can be implemented. The supporting effect of the laser beam hardened substrate leads to an increase of the wear resistance under high surface contact pressures. Laser beam hardening is applied to CVD TiN-coated AISI 4140 (EN 42CrMo4), AISI A2 (EN X100CrMoV5) and AISI D2 (EN X153CrMoV12) substrates.
引用
收藏
页码：71 / 76
页数：6
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