EFFECT OF NANOCRYSTALLIZATION-ASSISTED NITRIDING ON THE CORROSION BEHAVIOR OF AISI 4140 STEEL

被引：0

作者：

Ren, Zhencheng ^{[1
]}

Hou, Xiaoning ^{[1
]}

Dong, Yalin ^{[1
]}

Ye, Chang ^{[1
]}

机构：

[1] Univ Akron, Dept Mech Engn, Akron, OH 44325 USA

来源：

PROCEEDINGS OF THE ASME 11TH INTERNATIONAL MANUFACTURING SCIENCE AND ENGINEERING CONFERENCE, 2016, VOL 2 | 2016年

关键词：

Severe plastic deformation; ultrasonic nanocrystal surface modification; gas nitriding; corrosion; STAINLESS-STEEL; SURFACE NANOCRYSTALLIZATION; MECHANICAL ATTRITION; PLASMA; AISI-4140; RESISTANCE; WEAR;

D O I：

暂无

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

In this study, an innovative process called nanocrystalltation-assisted nitriding was used to process 4140 steels. First, a nanocrystalline surface layer was induced in 4140 steel by ultrasonic nanocrystal surface modification (UNSM). The abundant nanoscale grain boundaries provide micro-channels for efficient nitrogen diffusion during nitriding at relatively low temperature (450 degrees C) and short duration (4 hours). The samples were characterized by X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy. The hardness and corrosion resistance were examined and compared for samples after different processing conditions. It has been demonstrated that the sample processed by nanocrystallization-assisted nitriding has much higher hardness and corrosion resistance compared with the samples processed by nitriding only.

引用

页数：6

共 24 条

[1] THE EFFECT OF NITROGEN ON THE CORROSION OF PLASMA-NITRIDED 4140 STEEL [J].