Indexed In Scopus
  Scopus ID: 21100926589

Improvement of Plasma Nitriding Efficacy of Alloy Steel by Laser Peening

Avinash S, Vineet Kumar Yadav, Tony M Shaju, Vijayan K and Pradeep K

Abstract

Laser peening is an advanced technology used for improving metallic material properties. These improved properties are achieved through induced compressive residual stresses. This will enhance the useful service life of products in the intended applications. Laser peening is also useful for assisting and improving further processing operations involved in the fabrication phase of the components. Alloy steels are utilized in engineering applications owing to their superior strength properties. But these alloy steels are found lacking in wear resistance. Plasma nitriding can be used for improving the case hardness of the materials which tend to fail due to wear during their service life. Laser peening can be performed as preprocessing stage for the improvement of the plasma nitriding effectiveness. The microhardness results of plasma nitrided samples with laser preprocessing show considerable improvement in hardness levels compared with the un-peened sample. This is achieved through an overlap rate of 40% of laser spot size during the laser peening operation. The increase in case-hardened depth was revealed by the optical microscopy analysis. And it was observed that the case-hardened depth increased by up to 125%.

Published on: March 27, 2023
doi: 10.17756/nwj.2023-s1-018
Citation: Avinash S, Vineet KY, Tony MS, Vijayan K, Pradeep K. 2023. Improvement of Plasma Nitriding Efficacy of Alloy Steel by Laser Peening. NanoWorld J 9(S1): S88-S91.

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