首页|Study of the fatigue fractography of dual phase low carbon steel used in automotive industry

Study of the fatigue fractography of dual phase low carbon steel used in automotive industry

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Fatigue properties play a crucial role as they are vital to ensuring the durability and integrity of components subjected to repeated loading conditions over long periods.The main objective of this work is to investigate the fatigue behavior of dual phase low-carbon steels used in automotive applications using a rotating bending fa-tigue machine.Heat treatments were carried out to analyze the microstructure's effect on the fatigue properties,including quenching low-carbon steel samples at 800℃ and 900℃.Hardness and tensile tests were performed,and the microstructure was inspected to examine the constitute phases.With the assistance of a scanning electron microscope,fractographic analyses were carried out to reveal the fracture features of the samples at different life-time ranges.The results show that various failure mechanisms occur depending on the stress levels.Additionally,the specimens quenched at 900℃ exhibited higher fatigue strength.

FatigueDual phaseLow carbon steel

Ahmed A.Zainulabdeen、Bahaa Sami Mahdi、Jabbar H.Mohmmed、Niveen Jamal Abdulkader、Muslim Ali、Mujtaba A.Flayyih

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Materials Engineering Department,University of Technology-Iraq,Baghdad 10066,Iraq

Production Engineering and Metallurgy Department,University of Technology-Iraq,Baghdad 10066,Iraq

Prosthetics and Orthotics Engineering Department,College of Engineering,University of Kerbala,Kerbala 56001,Iraq

Prosthetics and Orthotics Engineering Department,College of Engineering and Technologies,Al-Mustaqbal University,Babylon 51001,Iraq

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2024

10.1016/j.taml.2024.100552

力学快报(英文)

力学快报(英文)

影响因子：0.163
ISSN：2095-0349
年,卷(期)：2024.14(5)