Effects of cryogenic treatment on microstructures and mechanical properties of Mg-2Nd-4Zn alloy

Dong, Ningning; Sun, Lingxiong; Hai, Ma; Jin, Peipeng

doi:10.1016/j.matlet.2021.130699

Cited by 19 publications

(5 citation statements)

References 8 publications

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“…a -Cryogenic treatment in liquid nitrogen (−196 • C) for 1 day[26]. Note: (↑↓%) changes are with respect to Mg-2CeO 2 (AE).…”

mentioning

confidence: 99%

Comparison of Shallow (−20 °C) and Deep Cryogenic Treatment (−196 °C) to Enhance the Properties of a Mg/2wt.%CeO2 Nanocomposite

Gupta,

Parande,

Gupta

2024

Technologies

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Magnesium and its composites have been used in various applications owing to their high specific strength properties and low density. However, the application is limited to room-temperature conditions owing to the lack of research available on the ability of magnesium alloys to perform in sub-zero conditions. The present study attempted, for the first time, the effects of two cryogenic temperatures (−20 °C/253 K and −196 °C/77 K) on the physical, thermal, and mechanical properties of a Mg/2wt.%CeO2 nanocomposite. The materials were synthesized using the disintegrated melt deposition method followed by hot extrusion. The results revealed that the shallow cryogenically treated (refrigerated at −20 °C) samples display a reduction in porosity, lower ignition resistance, similar microhardness, compressive yield, and ultimate strength and failure strain when compared to deep cryogenically treated samples in liquid nitrogen at −196 °C. Although deep cryogenically treated samples showed an overall edge, the extent of the increase in properties may not be justified, as samples exposed at −20 °C display very similar mechanical properties, thus reducing the overall cost of the cryogenic process. The results were compared with the data available in the open literature, and the mechanisms behind the improvement of the properties were evaluated.

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“…a -Cryogenic treatment in liquid nitrogen (−196 • C) for 1 day[26]. Note: (↑↓%) changes are with respect to Mg-2CeO 2 (AE).…”

mentioning

confidence: 99%

Comparison of Shallow (−20 °C) and Deep Cryogenic Treatment (−196 °C) to Enhance the Properties of a Mg/2wt.%CeO2 Nanocomposite

Gupta,

Parande,

Gupta

2024

Technologies

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“…In turn, La and Ce have negligible solid solubility in an α-Mg matrix Ce form the layers of intermetallic phases, which completely wet the Mg/Mg G Figure 21). GB wetting by the intermetallic Mg-RE phases was also observed in M 4Zn [126], Mg-5Sn-2Zn-0.5Zr (wt%) [128], Mg-2Dy-0.5Zn (wt%) [129], Mg-14L alloys [130] and AZ31/ZK60 bimetal rods [131]. GB wetting by a second solid phase was observed in multicomponent highalloys (HEA) such as in arc-melted CoFeNi0.5AlCrx (x = 0.25, 0.50, 0.75 and 1.00) all treated at 1200 °C [84], CoCrFeNi(SiC)x alloy deposited powder plasma arc additiv ufacturing [132], in Al0.2MoNbTaTiW/MC refractory HEA composite manufactu spark plasma sintering and hot extrusion [134], carbon-alloyed FeMnCr-NiCo0.95C subjected to different thermal-mechanical treatments [136], AlCoCrFeNiTi-C H GB wetting by a second solid phase was observed in multicomponent high-entropy alloys (HEA) such as in arc-melted CoFeNi 0.5 AlCr x (x = 0.25, 0.50, 0.75 and 1.00) alloy heat treated at 1200 • C [84], CoCrFeNi(SiC) x alloy deposited powder plasma arc additive manufacturing [132], in Al 0.2 MoNbTaTiW/MC refractory HEA composite manufactured by spark plasma sintering and hot extrusion [134], carbon-alloyed FeMnCr-NiCo 0.95 C 0.05 HEA subjected to different thermal-mechanical treatments [136], AlCoCrFeNiTi-C HEA annealed at 1200 • C [138], NiCoCrAlY coating on 304 stainless steel laser processed at 950 • C [139], spark plasma sintered (SPS) HfNbTaTiZr HEA [140], AlCoCrCuFeNi HEA heat treated at 1200 • C [141], AlCoCrFeNiCu HEA coating deposited by the high velocity oxygen fuel spraying (HVOF) and vacuum heat treatment (VHT) at different temperatures (500, 700, 900 and 1100 • C) [142], AlNb 2 TiV low-weight refractory HEA [143] ans Al 10 Co 19 Cr 16 Fe 20 Ni 35 HEA homogenized at 1200 • C and annealed at 800 • C and at 590 • C [144].…”

Section: Influence Of Gb Wetting By the Second Solid Phase On The Pro...mentioning

confidence: 66%

“…La and Ce form the layers of intermetallic phases, which completely wet the Mg/Mg GBs (see Figure 21). GB wetting by the intermetallic Mg-RE phases was also observed in Mg-2Nd-4Zn [126], Mg-5Sn-2Zn-0.5Zr (wt%) [128], Mg-2Dy-0.5Zn (wt%) [129], Mg-14Li-0.5Ni alloys [130] and AZ31/ZK60 bimetal rods [131].…”

Section: Influence Of Gb Wetting By the Second Solid Phase On The Pro...mentioning

confidence: 68%

“…GB wetting by the second solid phase can have a strong influence on the properties of materials, including Al alloys [18,20,22,23,[25][26][27][28][29][30][31][32][33][34][35], Fe-based alloys and steels [36,, Co-and Ni-based alloys [78][79][80][81][82][83][84][85], Cu alloys [86,88,90], Ti-and Zr-based alloys [91,93,95,97,, Mg alloys [124,126,[128][129][130][131], as well multicomponent and high-entropy alloys [132,134,[136][137][138][139][140][141][142][143][144].…”

Section: Influence Of Gb Wetting By the Second Solid Phase On The Pro...mentioning

confidence: 99%

“…Almost 20 years have passed since the discovery of the phenomenon of GB wetting by other solid phases in 2004 [17]. The indications of GB wetting by other solid phases were found and studied in a large circle of systems such as Al alloys [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35], Fe-based alloys and steels , Co-and Ni-based alloys [77][78][79][80][81][82][83][84][85], Cu alloys [86][87][88][89][90], Ti-and Zr-based alloys , Mg alloys [124][125][126][127][128][129][130][131], as well multicomponent and high-entropy alloys [132][133][134][135][136]…”

Section: Introductionmentioning

confidence: 99%

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Grain Boundary Wetting by the Second Solid Phase: 20 Years of History

Straumal

Lepkova

Korneva

et al. 2023

Metals

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Grain boundaries (GBs) can be wetted by a second phase. This phase can be not only liquid (or melted), but it can also be solid. GB wetting can be incomplete (partial) or complete. In the case of incomplete (partial) wetting, the liquid forms in the GB droplets, and the second solid phase forms a chain of (usually lenticular) precipitates. Droplets or precipitates have a non-zero contact angle with the GB. In the case of complete GB wetting, the second phase (liquid or solid) forms in the GB continuous layers between matrix grains. These GB layers completely separate the matrix crystallites from each other. GB wetting by a second solid phase has some important differences from GB wetting by the melt phase. In the latter case, the contact angle always decreases with increasing temperature. If the wetting phase is solid, the contact angle can also increase with increasing temperature. Moreover, the transition from partial to complete wetting can be followed by the opposite transition from complete to partial GB wetting. The GB triple junctions are completely wetted in the broader temperature interval than GBs. Since Phase 2 is also solid, it contains GBs as well. This means that not only can Phase 2 wet the GBs in Phase 1, but the opposite can also occur when Phase 1 can wet the GBs in Phase 2. GB wetting by the second solid phase was observed in the Al-, Mg-, Co-, Ni-, Fe-, Cu-, Zr-, and Ti-based alloys as well as in multicomponent alloys, including high-entropy ones. It can seriously influence various properties of materials.

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Enhancing Microstructural, Thermal, Mechanical, and Corrosion Response of a Bio/Eco‐Compatible Mg–2Zn–1Ca–0.3Mn Alloy Using Two Types of Cryogenic Treatments

Sole,

Johanes,

Gupta

2024

Adv Eng Mater

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Biocompatible Mg–2Zn–1Ca–0.3Mn is synthesized using the disintegrated metal deposition process and subjected to two types of cryogenic treatments (refrigeration [RF] at −20 and −196 °C using liquid nitrogen) with a target to improve microstructural, thermal, mechanical, and electrochemical responses. The material exhibits densification and grain refinement after these treatments, which improves the physical, thermal, compressive, and corrosion responses. While both RF and liquid nitrogen exposures improve the overall combination of properties, overall improvement in properties is best met with RF treatment at −20 °C. In the results of this work, the efficacy of low energy option (RF) is convincingly established rather than liquid nitrogen exposure (as conventionally practiced) to enhance microstructure and properties.

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Effects of cryogenic treatment on microstructures and mechanical properties of Mg-2Nd-4Zn alloy

Cited by 19 publications

References 8 publications

Comparison of Shallow (−20 °C) and Deep Cryogenic Treatment (−196 °C) to Enhance the Properties of a Mg/2wt.%CeO2 Nanocomposite

Comparison of Shallow (−20 °C) and Deep Cryogenic Treatment (−196 °C) to Enhance the Properties of a Mg/2wt.%CeO2 Nanocomposite

Grain Boundary Wetting by the Second Solid Phase: 20 Years of History

Enhancing Microstructural, Thermal, Mechanical, and Corrosion Response of a Bio/Eco‐Compatible Mg–2Zn–1Ca–0.3Mn Alloy Using Two Types of Cryogenic Treatments

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