Effect of heat treatment on corrosion behavior of duplex stainless steel in orthodontic applications

被引：6
作者：
Hammood, Ali Sabea [1 ]
Noor, Ahmed Faraj [1 ]
Alkhafagy, Mohammed Talib [2 ]
机构：
[1] Univ Kufa, Mat Engn Dept, Fac Engn, Kufa, Iraq
[2] Univ Kufa, Fac Dent, Kufa, Iraq
来源：
MATERIALS RESEARCH EXPRESS | 2017年 / 4卷 / 12期
关键词：
duplex stainless steel; heat treatment; artificial saliva; cyclic potentiodynamic; orthodontic wire; TREATMENT TEMPERATURE; MECHANICAL-PROPERTIES; PITTING CORROSION; MICROSTRUCTURE; RESISTANCE; PRECIPITATION; TOUGHNESS; PHASES;
D O I：
10.1088/2053-1591/aa9c02
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Heat treatment is necessary for duplex stainless steel (DSS) to remove or dissolve intermetallic phases, to remove segregation and to relieve any residual thermal stress in DSS, which may be formed during production processes. In the present study, the corrosion resistance of a DSS in artificial saliva was studied by potentiodynamic measurements. The microstructure was investigated by scanning electron microscopy (SEM), x-ray diffraction (XRD) and Vickers hardness (HV). The properties were tested in as-received and in thermally treated conditions (800-900 degrees C, 2-8 min). The research aims to evaluate the capability of DSS for orthodontic applications, in order to substitute the austenitic grades. The results indicate that the corrosion resistance is mainly affected by the ferrite/ austenite ratio. The best result was obtained with a treatment at 900 degrees C for 2 min.
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页数：11
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