from the conferences organized by TANGER Ltd. provisional website
The key characteristic of austenitic Hadfield´s steel is its toughening (hardening) under mechanical loading (during operation). By the influence of mechanical loading austenite transformed to martensite, resulting in surface hardening (curing) with a good toughness. High abrasion resistance is the result.Due to very difficult machinability and weldability are the final products made generally of either as casting or as simple parts made of rolled sheets.This paper describes the most common faults on rolled sheets and their influence on abrasion resistance. As base for samples selection sheets of normal production were chosen on which were identified following defects: decarburized layer on surface, carbides on the grain boundaries, and martensitic structure in delivered condition before any mechanical loading. For the comparison of abrasive resistance was used test in shot blasting machine. Weight difference was evaluated on each sample.Achieved results confirmed that the samples which were grinded of (surface defects removing) have about 25 to 40 % less weight loss than the samples which were left in common delivery conditions.Keywords: Hadfield steel, X120Mn12, carbides, decarburized layer, wear resistance
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