Material Properties Analysis after Heat Treatment

This article addresses the influence of heat treatment and corrosion degradation on the mechanical properties of material. The introduction contains information related to the issue of the steel heat treatment theory. The aim of this article is to verify the influence of recrystallization annealing, hardening and refining on the mechanical properties of high-quality carbon steel 12 050. After selecting a suitable material for this experiment, tensile plates were made by the water jet from sheet metal for the tensile tests which were made on the university blasting device. The experiment compares the influence of corrosion degradation, in particular heat treatments. Hardness, corrosion and tensile strength tests during which also the values of acoustic emissions were recorded, are verified here. Pen test (Hsu-Nielson) was used for the activation of signal. The results of the measurements are supplemented by graphs from the course of the tensile test as well as by an acoustic emission record.