Tribological Behavior of the 316L Stainless Steel with Heterogeneous Lamella Structure.

Wenbo Qin,Jiajie Kang,Wen Yue,Dingshun She,Yusheng Li,Qingzhong Mao,Yaoyao Liu,Jiansheng Li

doi:10.3390/ma11101839

Abstract

In this paper, the tribological behavior of 316L stainless steel with heterogeneous lamella structure (HLS), prepared through 85% cold rolling technology and subsequent annealing treatment (750 °C, 10 min), were conducted on a ball-on-disc tribometer under different normal loads in dry ambient air conditions. The morphologies, structures, and compositions of the raw and worn surfaces were analyzed by 3D surface profilometer, XRD, SEM, EDS and TEM. Based on this, the results showed that the HLS 316L stainless steel samples exhibited lower and more steady friction coefficients than coarse-grained samples, especially under higher loads, which can be attributed to the existence of numerous oxidative particles across sliding interfaces. However, the wear resistance of HLS 316L stainless steel sample was a little weakened compared to that of the coarse-grained sample under a normal load of 5 N. When the load increases up to 15 N, an obviously decreased wear resistance was found for the HLS of the 316L stainless steel sample, which was 50% lower than that of coarse-grained sample. This can be ascribed to the more severe oxidative and abrasive wear performance of HLS 316L stainless steel sample under dry sliding conditions.

Highlights

The 316L austenitic stainless steels have been wildly used in engineering applications as work piece materials, due to their excellent properties, such as corrosion resistance, good formability, and high work-hardening capacity [1,2,3]
0.8, which is consistent sliding against GCr15 balls under various loads conditions
The friction coefficient as-received stainless steel unsteady and fluctuating friction coefficient that ranged fromof0.4 to 0.8, which is consistent withsample many is hardly affected by the normal loads

Summary

Introduction

The 316L austenitic stainless steels have been wildly used in engineering applications as work piece materials, due to their excellent properties, such as corrosion resistance, good formability, and high work-hardening capacity [1,2,3]. In a boundary lubrication regime, for work pieces with relative motion, it cannot be guaranteed that the sliding surfaces are always in well lubricated conditions. For steel-on-steel sliding contacts, especially under dry sliding conditions, the deformation and microstructure evolution are of great significance to the tribological behavior of a tribosystem. Those evolutions of subsurface microstructure are crucial in determining the material removal processes [4,5,6]. The microhardness and microstructure of sliding pairs seriously affect the tribology behavior [7,8,9]. It has become urgent to needs systematically understand its intrinsic tribological mechanism, which will greatly be advantage to guide industrial applications

Methods

Results

Discussion

Conclusion