Author:
Lu Yao,Xie Haibo,Wang Jun,Jia Fanghui,Lin Fei,Zhou Cunlong,Xu Jianzhong,Han Jingtao,Jiang Zhengyi
Abstract
AbstractThis paper compares the microstructure and mechanical evolution in a high-strength quenched and micro-alloyed steel during the austenitising bending process. Simulation results indicated a new finding that the stress neutral layer (SNL) tends to move to the tension zone during straining. The hardness gradient detected from the centre to compression/tension zones was resulted from comprehensive factors: First of all, the location of SNL revealed a prominent impact on strength. Second, the dislocation accumulation would be responsible for the hardness gradient on the surfaces. In addition, the overall strength decrease during straining was mainly ascribed to integrated effects of dynamic recovery (DRV) and dynamic recrystallisation (DRX). Apart from that, overall smaller martensite packet size and coarser prior austenite grains resulted in the increased hardness value at a lower bending degree. Also, the high consistency between experimental and simulation results is instructive for the practical forming process of railway spring fasteners.
Funder
Australian Research Council (ARC) ITTC-Rail Centre
The University of Wollongong
Publisher
Springer Science and Business Media LLC
Subject
Industrial and Manufacturing Engineering,Computer Science Applications,Mechanical Engineering,Software,Control and Systems Engineering
Reference60 articles.
1. Lu Y, Xie H, Wang J, Li Z, Jia F, Wu H, Han J, Jiang Z (2020) Influence of hot compressive parameters on flow behaviour and microstructure evolution in a commercial medium carbon micro-alloyed spring steel. J Manuf Process 58:1171–1181. https://doi.org/10.1016/j.jmapro.2020.09.021
2. Hasap A, Paitekul P, Noraphaiphipaksa N, Kanchanomai C (2018) Analysis of the fatigue performance of elastic rail clip. Eng Fail Anal 92:195–204. https://doi.org/10.1016/j.engfailanal.2018.05.013
3. Lakusic S, Bartos D, Ante Goran B (2005) Experimental and numerical analysis of the rail fastening spring clips types SKL11-SK12, Symposium on experimental methods in Solid Mechanics. 22nd DANUBIA-ADRIA Symposium on Experimental Methods in Solid Mechanics, Parma, University of Parma, 2005, pp. 248–249
4. Ling L, Li W, Shang H, Xiao X, Wen Z, Jin X (2014) Experimental and numerical investigation of the effect of rail corrugation on the behaviour of rail fastenings. Veh Syst Dyn 52:1211–1231. https://doi.org/10.1080/00423114.2014.934844
5. Mohammadzadeh S, Ahadi S, Nouri M (2014) Stress-based fatigue reliability analysis ofthe rail fastening spring clipunder traffic loads. Latin Am J Solids Struc 11:993–1011
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献