The influence of austenitization on grain size and mechanical properties of regenerative G21CrMoV4每6 cast steel

作者：G Golaski; J Kupczyk

来源：Archives of Materials Science and Engineering, 2008.

• Metallic alloys
• Mechanical properties
• Quantitative metallography

Purpose: Influence of austenitiziation parameters (temperature and time) on grain size and mechanical properties of low alloy cast steel have been investigated.Design/methodology/approach: The grain size of former austenite was determined by Image Pro Plus software and its distribution by STATISTICA software. The fractography was characterized using TEM. Moreover, mechanical properties (impact energy and hardness) have been measured.Findings: What has been evaluated is the optimum range of austenitization temperatures making it possible to obtain fine austenite grain in the Cr每Mo每V cast steel. Received mechanical properties (after various austenitization parameters) revealed an advantage of tempered bainitic 每 ferritic structure over the ferritic 每 pearlitic one (after full- and under-annealing).Practical implications: The established heat treatment parameters can be useful for preparation of regenerative heat treatment technology of Cr每Mo每V casts steels.Originality/value: The relationship between the austenitization parameters, grain size and mechanical properties in G21CrMoV4每6 cast steel was specified.