Effects of Cr on stacking-fault energy and damping capacity of FeMn |
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Authors: | B. Wu B. Qian |
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Affiliation: | College of Manufacturing Science and Engineering, Sichuan University, Chengdu, 610065, China |
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Abstract: | Effects of Cr on the stacking-fault energy (SFE) and damping capacity were investigated by experimental and theoretical methods. The effect of Cr on SFE was thermodynamically calculated; the damping capacity, phase composition, microstructure and corrosion resistance were experimentally measured. The results showed that Cr increases the SFE of Fe17MnxCr which resulted in the decay of damping capacity; the increase in α’ martensite with the increasing Cr content above 6% pins the movement of Shockley partials’ dislocation and thus makes the damping capacity even worse; the optimum Cr content of Fe17MnxCr to improve the corrosion resistance in water vapour with a lesser decrease in damping capacity is about 6%. |
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Keywords: | Damping capacity FeMn alloy Cr Stacking-fault energy Ε martensite Corrosion resistance |
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