Hongxu Cheng

Area of research

Aerospace Engineering · Mechanical Engineering

Research interest

Research topics from publications: Tailoring microstructure and corrosion behavior of CoNiVAlx medium entropy alloys via Al addition; Review—Corrosion-Resistant High-Entropy Alloy Coatings: A Review; Corrosion behavior and passive film characteristics of AlNbTiZrSix high-entropy alloys in simulated seawater environment; Influencing factors and mechanism of high-temperature oxidation of high-entropy alloys: A review; Electrochemical corrosion and passive behavior of a new high-nitrogen austenitic stainless steel in chloride environment; Tuning the microstructure to improve corrosion resistance of additive manufacturing high-entropy alloy in proton exchange membrane fuel cells environment; Novel Mo-modified medium entropy alloys achieving enhanced corrosion resistance in acidic solution; Microstructure and corrosion resistance properties of (FeCoNi)86Al7Ti7 high-entropy alloy via different aging time; Effect of fluoride ion concentration and fluctuating conditions on titanium bipolar plate in PEM water electrolyser environment; Effects of rare earth elements addition on mechanical properties and corrosion behavior of GCr15 bearing steel under different heat treatment conditions. Representative work: For a long time, the corrosion problem of materials has been an essential factor in restricting high-tech and national economic development. As an effective means of corrosion protection, surface coatings have drawn extensive attention in the field of material corrosion. Performance improvement and a new composition system of high-entropy alloys (HEAs) have made HEA coatings a research hotspot. HEA coatings inherit the “four core effects” of bulk HEAs, especially high entropy and sluggish diffusion, making high-quality coatings exhibit outstanding corrosion resistance. At present, many reports have focused on the performance of HEA coatings in the field of severe corrosion environments. This In this work, effects of rare earth addition on mechanical properties and corrosion behavior of GCr15 bearing steel under hot rolled, annealed, and quenched-tempered conditions were investigated via mechanical tests, electrochemical measurements, and immersion tests. Results show that rare earth elements can refine grains, improve hardness, tensile strength, and impact absorption energy of GCr15 bearing steel under different heat treatment conditions. Besides, it has been found

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