Effect of Recrystallization Annealing on Corrosion Behavior of Ta-4%W Alloy

Ma, Guoqiang; He, Qiongyao; Luo, Xuan; Wu, Guilin; Chen, Qiang

doi:10.3390/ma12010117

Cited by 10 publications

(5 citation statements)

References 36 publications

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“…However, lowering the grain boundary energy by the recovery treatment enhanced the corrosion resistance. The sharpened grain boundaries in a more stable state also increase hardness by more effectively blocking the movement of dislocations across the grain boundaries and thus elevated wear resistance, [36,[45][46][47][48][49][50][51][52][53][54] which has also been demonstrated by the results reported in this article. It should be pointed out that if the annealing temperature is sufficiently high, resulting in recrystallization and grain growth, the mechanical strength will be reduced.…”

Section: Microstructural Variation and Its Influence On Properties Of...supporting

confidence: 75%

“…Such a reduction of dislocation density benefits the corrosion resistance as demonstrated in this study and previous ones reported in the literature. [ 36,50,51 ]…”

Section: Resultsmentioning

confidence: 99%

“…Such a reduction of dislocation density benefits the corrosion resistance as demonstrated in this study and previous ones reported in the literature. [36,50,51] For large-angle grain boundaries (Figure 12), the recovery treatment helps dislocations to locally move and be absorbed by the grain boundaries. In the process, the grain boundaries were adjusted and straightened in order to lower the grain boundary energy.…”

Section: Microstructural Variation and Its Influence On Properties Of...mentioning

confidence: 99%

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A Simple Surface Treatment for Mg to Gain Enhanced Resistance to Corrosion and Corrosive Wear by Hammering Al Powder‐Covered Mg Substrate

Tang

et al. 2022

Adv Materials Inter

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rendering it widely utilized for cellular phones and notebook computers in recent years. The earth crust contains 2.1% mass of Mg, [5] making this abundant metal available for a wide range of applications. However, magnesium has shortcomings, including high chemical reactivity or low resistance to corrosion and others such as wear and creep. [6] Significant efforts have been made to modify Mg-based alloys by alloying appropriate elements [7] or modify the surface of Mg or Mg alloys [6] for improved performance. Surface modification of Mg or Mg alloys is an economical and effective approach for enhanced resistance to corrosion and wear.There are many processes for coating a more durable layer on the outmost surface of a base material for desired properties. The coating materials can be metallic, ceramic, or polymeric, depending on the application. For Mg or Mg alloys, different surface methods have been studied and used, e.g., pack vacuum diffusion, [8,9] salt bath, [10,11] cold/ thermal spray, [12][13][14] laser processing, [15,16] chemical vapor deposition, [17,18] and physical vapor deposition, [19,20] electrodeposition, [21,22] and chemical conversion coating, [23,24] etc. These techniques can improve the corrosion resistance of Mg to different extents. However, some of the techniques need costly equipment or involve complicated processes. For example, vacuum chamber and pumping system as well as gas lines are required for physical vapor deposition. For less expensive techniques such as electrodeposition, one needs to deal with electrolyte preparation, wet process, electrolyte recycling, etc. For chemical conversion coating process, which is also a wet process, different factors need to be handled, e.g., chemical solution preparation, waste solution recycling, and control of various process parameters such as temperature, pressure, and solution ion concentrations. [24] This work shows a simple approach to increase the resistance of Mg to corrosion and corrosive wear by generating a nanocrystalline aluminum layer on Mg surface, which is achieved by repeated punching or hammering an Al powdercovered Mg substrate. Al is also a light metal with excellent passivation capability. A thin Al layer on the Mg substrate can significantly increase its resistance to corrosion and corrosive Mg is abundant in the earth crust and very attractive as a base metal of lightweight alloys for the transportation industry due to its high strengthto-weight ratio. However, Mg is prone to corrosion, which largely limits its widespread applications. Here, a very simple surface treatment method is demonstrated for enhanced resistance to corrosion and corrosive wear by hammering Al powder-covered surface of Mg with subsequent recovery treatment. Such treated surface is examined with X-ray diffraction technique for information on phases, nanocrystallization, thickness, and coverage of the Al layer. Structure of the Al layer and lattice imperfections are analyzed with transmission electron microscopy. Electrochemical behavior, corrosion, and...

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Section: Microstructural Variation and Its Influence On Properties Of...supporting

confidence: 75%

“…Such a reduction of dislocation density benefits the corrosion resistance as demonstrated in this study and previous ones reported in the literature. [ 36,50,51 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Microstructural Variation and Its Influence On Properties Of...mentioning

confidence: 99%

See 1 more Smart Citation

A Simple Surface Treatment for Mg to Gain Enhanced Resistance to Corrosion and Corrosive Wear by Hammering Al Powder‐Covered Mg Substrate

Tang

et al. 2022

Adv Materials Inter

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“…Craniomaxillofacial surgery implant materials, including medical metals, inorganic nonmetals, polymers, and composite materials, etc., have become an important part of clinical treatment. Tantalum metal has excellent corrosion resistance as well as high melting point, high strength, and wear resistance 4 . Recent studies have shown that tantalum is more biocompatible than titanium 5 .…”

Section: Introductionmentioning

confidence: 99%

Metal-polyphenol networks-modified tantalum plate for craniomaxillofacial reconstruction

Wei,

Shen,

Deng

et al. 2024

Sci Rep

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Using three-dimensional (3D) printing technology to make the porous tantalum plate and modify its surface. The physicochemical properties, cytocompatibility, antioxidant capacity, and histocompatibility of the modified materials were evaluated to prepare for the repair of craniomaxillofacial bone defects. The porous tantalum plates were 3D printed by selective laser melting technology. Tantalum plates were surface modified with a metal polyphenol network. The surface-modified plates were analyzed for cytocompatibility using thiazolyl blue tetrazolium bromide and live/dead cell staining. The antioxidant capacity of the surface-modified plates was assessed by measuring the levels of intracellular reactive oxygen species, reduced glutathione, superoxide dismutase, and malondialdehyde. The histocompatibility of the plates was evaluated by animal experiments. The results obtained that the tantalum plates with uniform small pores exhibited a high mechanical strength. The surface-modified plates had much better hydrophilicity. In vitro cell experiments showed that the surface-modified plates had higher cytocompatibility and antioxidant capacity than blank tantalum plates. Through subcutaneous implantation in rabbits, the surface-modified plates demonstrated good histocompatibility. Hence, surface-modified tantalum plates had the potential to be used as an implant material for the treatment of craniomaxillofacial bone defects.

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“…The question still remains therefore how the change in corrosion resistance relates to the severe deformation structure for metals and alloys. In our previous studies on the Ta-4%W alloy [ 26 , 27 , 28 , 29 , 30 ], we have reported the microstructural evolution after cold rolling and the corrosion behavior on rolling plane in sulfuric acid. However, the effects of macroscopic orientation and crystallographic texture in different directions on the surface dissolution of cold-rolled sheets are still unknown and they are the key components of the present research.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Severe Plastic Deformation on the Corrosion Resistance of a Tantalum–Tungsten Alloy

Zhao

Xiang

et al. 2022

Materials

Self Cite

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Tantalum and its alloys are regarded as equipment construction materials for processing aggressive acidic media due to their excellent properties. In this study, the influence of severe rolling (90%) on the dissolution rate of a cold-rolled Ta-4%W sheet in different directions was investigated during immersion testing and the corresponding mechanism was discussed. The results show that the dissolution rate of the cold-rolled sample is significantly lower than that of the undeformed sample. The corrosion resistance followed the sequence of “initial” < “90%-ND” < “90%-RD” < “90%-TD”, while the strength is in positive correlation with the corrosion resistance. Severe rolling promotes grain subdivision accompanied by long geometrically necessary boundaries and short incidental dislocation boundaries on two scales in the cold-rolled sample. The volume elements enclosed by geometrically necessary boundaries form preferential crystallographic orientations. Such preferential crystallographic orientations can greatly weaken the electrochemical process caused by adjacent volume elements, resulting in greatly reduced corrosion rates in the severely deformed sample. The unexpected finding provides a new idea for tailoring the structures of tantalum alloys to improve both their strength and corrosion resistance.

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Effect of Recrystallization Annealing on Corrosion Behavior of Ta-4%W Alloy

Cited by 10 publications

References 36 publications

A Simple Surface Treatment for Mg to Gain Enhanced Resistance to Corrosion and Corrosive Wear by Hammering Al Powder‐Covered Mg Substrate

A Simple Surface Treatment for Mg to Gain Enhanced Resistance to Corrosion and Corrosive Wear by Hammering Al Powder‐Covered Mg Substrate

Metal-polyphenol networks-modified tantalum plate for craniomaxillofacial reconstruction

Effect of the Severe Plastic Deformation on the Corrosion Resistance of a Tantalum–Tungsten Alloy

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