Behavior of Carbon Steel Machine Elements in Acidic Environment

The objective of this paper is to study the surface texture behavior low and medium-carbon steels machine elements in acidic environment using Abbott Firestone curve depending upon MATLAB software. chemical composition low-carbon steel 0.16C-0.27Si-1.47Mn-0.02Al while 0.49C-0.30Si-0.91Mn-0.03Al. They were hot-rolled at 1200°C for 30 min followed by air cooling. Two different heat treatment processes applied on samples. first was quenching after martensite finish (QAMf) second one partitioning (Q&P). For 0.16C, microstructure gives bands ferrite pearlite steel. However, 0.49C produces coarse islands surrounded phase. While, QAMf Q&P contain ferrite, bainite, lath martensite, retained austenite 0.16C steel, polygonal respectively. In (0.16C), hot-rolling, suffers from exploitation zone (44%) texture. QAMf, (0.16C) lower (36%). addition, 40% voids increases 52% (0.49C), 78% Furthermore, slightly enhances (exploitation zone) 82%. At same time, exhibit very small number (1–4%). Therefore, (hot-rolled QAMf) highly subjected severe failure etchy environment. Q&P) recommended case moderate safety factor.