ArticleMaterials (Basel, Switzerland)2023
Decarburization in Laser Surface Hardening of AISI 420 Martensitic Stainless Steel.
Article in Materials (Basel, Switzerland), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Decarburization Control of H13 Steel Under Varying Process Pressures During Austenitization.Materials (Basel, Switzerland) · 2026Article
- Laser Surface Hardening of Carburized Steels: A Review of Process Parameters and Application in Gear Manufacturing.Materials (Basel, Switzerland) · 2025Review
- Decarburization of Wire-Arc Additively Manufactured ER70S-6 Steel.Materials (Basel, Switzerland) · 2023Article
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Authors and funding
3 authors.
Funding
Abstract
Decarburization deteriorates the surface mechanical properties of steel. It refers to the loss of carbon from steel's surface when exposed to an open-air environment in elevated-temperature conditions. Despite the short interaction time and fast thermal cycle of the laser surface-hardening process, decarburization may still occur. This paper investigates if decarburization occurs during the laser surface hardening of AISI 420 martensitic stainless steel. For comparison, surface-hardening results and decarburizations in a conventional air furnace-heated hardening process (water-quenched and air-cooled) of the same steel material were also investigated. Decarburization seems to have occurred in the laser surface hardening of AISI 420SS. However, the decarburization might not be significant, as the hardness of the steel's surface was increased more than three times to 675 HV during the laser surface hardening, and the hardness drop due to decarburization was estimated to be only 3% with the decarburization depth of 40 μm. Simulations using ThermoCalc software to get the carbon concentration profiles along the depth for both laser-hardened and furnace-heated samples were also investigated.
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