Showing papers by "Cheng Man published in 2019"
TL;DR: In this paper, the authors investigated the effects of heat treatment on the microstructural, mechanical and corrosion properties of 316 L stainless steel fabricated by selective laser melting, and they found that the passive film thickness and corrosion potential of the SLMed 316
234 citations
TL;DR: In this paper, the authors investigated the passivation and film chemistry of 2507 super duplex stainless steel in modified artificial seawater (ASW) and found that passive film becomes denser from pre-passivation to passivation region and pores form accompanied with the increase of oxidized Fe after transpassivation.
166 citations
TL;DR: In this article, the corrosion behavior of 316L stainless steel (316L SS) produced by selective laser melting (SLM) was conducted simulated body fluid (SBF) and showed that higher densities of grain boundary, sub-grain boundary and dislocation resulted in a thicker passive film forming on SLM 316L SS comparing with that of wrought sample in SBF.
129 citations
TL;DR: In this paper, the effect of Sr on microstructure and corrosion behavior of biodegradable Mg-1Zn-1Mn-xSr alloy is investigated.
100 citations
74 citations
TL;DR: In this article, the anisotropic properties of the SLMed hastelloy X alloy were investigated and compared with the wrought counterpart, and the corrosion depth was approximately three times larger than for the wrought and there was little difference on different planes for the SLmed matrix.
62 citations
TL;DR: In this paper, the effects of Nb content on the microstructure, mechanical properties and surface potential of the as-received and heat-treated nickel-based alloys were investigated.
60 citations
TL;DR: In this article, a joint powder-fed laser metal deposition (LMD) system with two independent powder delivery systems was used to fabricate Inconel 718 alloys with different TiC contents.
54 citations
TL;DR: In this article, the multiple effects of ǫ-Ni3Ti precipitates and reversed austenite on the passive film stability of nickel-rich Custom 465 steel were studied, and the results showed that with an increase in tempering temperature, the η-Ni 3 Ti precipitates gradually coarsened.
53 citations
TL;DR: The relationship between the microstructure of intergranular corrosion of SLM 316L SS was investigated in this paper, where the experimental results revealed that SLM316L SS could be sensitized at 650°C as the treatment duration was larger than 6'h.
52 citations
TL;DR: In this article, the influence of reversed austenite on the intergranular corrosion of AM355MSSs (martensitic stainless steels) was investigated, and the combined results revealed that the reversed Austenite exhibited an inhibiting effect on the internal granular corrosion.
TL;DR: In this paper, a roughness-regeneration model was proposed to fabricate durable and non-fluorinated superhydrophobic materials, through combining organosilicon functionalized Al2O3 (SiF-Al2O 3) microparticles and low-cost bakelite powder (solid-resin).
Abstract: The practical applications of superhydrophobic materials are still limited due to the fragile micro-nano scale rough structures. Here a novel preparation method based on a new roughness-regeneration model is reported to fabricate durable and non-fluorinated superhydrophobic materials, through combining organosilicon functionalized Al2O3 (SiF–Al2O3) microparticles and low-cost bakelite powder (solid-resin). The effect of the blend ratio of SiF–Al2O3/solid-resin on superhydrophobic properties of composite material was investigated in this paper. The material surface can retain superhydrophobicity after a series of rigorous durability testing, such as broken area test, sandstorm test, sandpaper abrasion test, knife scratch test and cold-resistant test. Even if the fine sandpaper (5000 Cw) is applied, a higher surface roughness can still be maintained (Sa = 2.1 μm) and the superhydrophobicity (WCA = 151°) of the surface is reserved.
TL;DR: The correlation between the distribution/size of carbides and corrosion resistance of 17Cr-1Ni ferritic-martensitic stainless steel after different heat treatment temperatures was investigated by transmission electron microscope, electrochemical tests, and corrosion morphology observations as mentioned in this paper.
Abstract: The correlation between the distribution/size of carbides and corrosion resistance of 17Cr-1Ni ferritic-martensitic stainless steel after different heat treatment temperatures was investigated by transmission electron microscope, electrochemical tests, and corrosion morphology observations. The results showed that the size of the precipitated phase decreased and corrosion resistance increased with an increase in the annealing temperature. When the tempering temperature was low (290 °C), carbides precipitated mainly at the phase boundaries due to a low degree of atomic matching and higher grain boundary energy. In this case, the polarization curve had a passivation interval and the pits were mainly initiated at the phase boundary. When the tempering temperature was higher than 400 °C, the carbides gradually precipitated in the martensite laths because the accelerated diffusion of Cr healed the Cr depletion zone at phase boundary. This outcome resulted in a polarization curve that had no passivation range and uniform corrosion occurred in martensitic region.