“Study of Heat Treatment Variables on Microstructure and Mechanical Properties of Aisi 4130 Low Alloy Steel’’
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The present study investigates the effect of heat treatment on the microstructure and mechanical properties of AISI 4130 steel. The material was subjected to a sequence of normalizing, hardening, and tempering treatments to evaluate the influence of tempering temperature on performance characteristics. Normalizing was carried out at 890°C followed by air cooling, resulting in a refined ferrite–pearlite microstructure. Subsequently, hardening was performed at 860°C and followed by quenching to obtain a martensitic structure.
Tempering was conducted at two different temperatures, 565°C (Sample A) and 655°C (Sample B), to study the variation in mechanical behavior.
The results highlight that tempering temperature plays a critical role in tailoring the balance between strength and toughness in AISI 4130 steel. This study provides useful insights for optimizing heat treatment parameters for engineering applications requiring a combination of mechanical performance and structural reliability.
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References
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