![]() ![]() The fitting by Voce model provided more accurate predictions at large strain-hardening behavior when compared with Hollomon’s model. In this work the experimental values were fitted using an iterative regression method of R 2, which provided values close to the unit. There is a lack of information in the literature, the use of these models is very interesting to these alloys in order to describe the mechanical behavior of maraging steels. Similarly, a study was performed with Hollomon and Voce constitutive models to describe the strain-hardening behavior of these alloys. The hydrogen diffusion in alpha iron was studied using an electrochemical permeation transfer function. ![]() Therefore, an analysis by environmental test was performed by obtention of stress and ductility comparative parameters. Additionally, the hydrogen embrittlement was evaluated in SSRT performed by cathodic potential applied at −1.2 V SCE in 3.5% NaCl solution. In this work, SSRT tests were performed in maraging 300 and 350 steels in solution treatment and aged conditions (783 K for 6 h). Thus, the knowledge of stress strain curves behavior performed at slow strain rate tensile tests (SSRT) is very interesting for processing, manufacturing and service from these high-performance alloys. ![]() This steel family belongs to a strategic group of materials with multiple applications, including pressure vessels, aeronautic and aerospace components, and sportive equipment. Maraging steels are ultra-high mechanical strength steels based on Ni-Co-Mo-Ti with extra low carbon content (< 0.03%). ![]()
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