Improvement of Tribological Properties and Corrosion Resistance of AISI 4340M Steel by Shot Peening and Plating Technologies

被引：0
作者：
Ahn, Seok-Hwan [1 ]
Kim, Jungsik [2 ]
Amanov, Auezhan [3 ]
机构：
[1] Jungwon Univ, Dept Unmanned Aero Mech Engn, Goesan 28024, South Korea
[2] Jungwon Univ, Grad Sch, Dept Convergence Engn, Goesan 28024, South Korea
[3] Tampere Univ, Fac Engn & Nat Sci, Tampere 33700, Finland
来源：
METALS | 2024年 / 14卷 / 09期
关键词：
AISI; 4340M; shot peening; heat treatment; Cr-plating; stripping; tribology; corrosion resistance; SURFACE; STRENGTH; BEHAVIOR;
D O I：
10.3390/met14091037
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, shot peening (SP), quenching and tempering (QT) heat treatment, baking heat treatment and Cr-plating technologies were used to enhance the hardness, tribological properties and corrosion resistance of AISI 4340M steel. The purpose of this study is to develop repair process technology for an overhaul of landing gear applied to the MRO process and establish a quality assurance system. The effects of SP, QT heat treatment, Cr-plating, stripping after Cr-plating and Cr-plating after stripping and re-SP on the tribological properties and corrosion resistance of AISI 4340M steel were investigated, and the obtained results were compared with the base AISI 4340M steel. One of the reasons for stripping after Cr-plating is to find out how many times stripping can be done after Cr-plating. Moreover, it is important to investigate the effect of re-SP after Cr-plating on the tribological properties and corrosion resistance. The tribological properties of the specimens were investigated using a ball-on-disk tribometer at room temperature against AISI 52100 steel for 60 min under dry conditions. The corrosion resistance was investigated using a potentiodynamic polarization test in NaCl 3.5% solution. The results showed that the application of SP, QT heat treatment, Cr-plating, stripping after Cr-plating and Cr-plating after stripping and re-SP had a significant effect on the tribological properties and corrosion resistance of AISI 4340M steel. The effects of SP and Cr-plating post-treatment technologies on the wear and corrosion enhancement and mechanisms were discussed based on the microstructural and surface morphology of worn and corroded surfaces.
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页数：17
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