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<p>Selective laser melting technology is considered one of the main and key methods in the fabrication of advanced components. This study compares the fatigue and wear resistance of 316&#xa0;L stainless steel components fabricated by laser powder bed fusion (LPBF) and conventional rolling processes. Experimental tests and simulations were used to evaluate the mechanical behavior under cyclic loading and tribological conditions. The results show that both manufacturing methods provide comparable fatigue performance and have only minor differences in behavior. However, the samples fabricated by LPBF showed slightly better wear resistance, which is attributed to their modified microstructure and higher surface hardness due to the high heat input and relatively fast cooling rate and the presence of oxides. It should be noted that although the surface roughness was higher in LPBF, the combination of influencing factors resulted in the sample fabricated by this method having higher wear resistance. These findings indicate that while rolled and LPBF parts perform similarly under fatigue, LPBF has a greater advantage in wear-sensitive applications.</p>

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Investigation of Wear and Fatigue Resistance of 316 L Austenitic Stainless Steel Manufactured by Laser Powder Bed Fusion

  • 期刊论文

  • 发表日期：

    2026年5月2日

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  • Hoorshad Mortezaei-Semnani,
  • Omid Ashkani,
  • Hamid Mehrabi,
  • Mark Armstrong,
  • Sina Taheri-Neyestanaki

摘要

Selective laser melting technology is considered one of the main and key methods in the fabrication of advanced components. This study compares the fatigue and wear resistance of 316 L stainless steel components fabricated by laser powder bed fusion (LPBF) and conventional rolling processes. Experimental tests and simulations were used to evaluate the mechanical behavior under cyclic loading and tribological conditions. The results show that both manufacturing methods provide comparable fatigue performance and have only minor differences in behavior. However, the samples fabricated by LPBF showed slightly better wear resistance, which is attributed to their modified microstructure and higher surface hardness due to the high heat input and relatively fast cooling rate and the presence of oxides. It should be noted that although the surface roughness was higher in LPBF, the combination of influencing factors resulted in the sample fabricated by this method having higher wear resistance. These findings indicate that while rolled and LPBF parts perform similarly under fatigue, LPBF has a greater advantage in wear-sensitive applications.