The influence of deep cryogenic treatment on the properties of high-vanadium alloy steel

Li, Haizhi; Tong, Weiping; Cui, Junjun; Zhang, Hui; Chen, Liqing; Zuo, Liang

doi:10.1016/j.msea.2016.03.039

Cited by 74 publications

(29 citation statements)

References 27 publications

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“…Lately, cryogenic treatment has been applied to different alloys like magnesium [19,20] and high vanadium alloy steel to improve their mechanical properties [21], or to different welded joints to reduce the residual stresses [22] and improve the tensile properties of the joints [23]. The application of DCT for the improvement of the corrosion resistance of different alloys has also been investigated.…”

Section: Introductionmentioning

confidence: 99%

Influence of Cryogenic Treatment on Wear Resistance and Microstructure of AISI A8 Tool Steel

Jimbert¹,

Iturrondobeitia²,

Ibarretxe³

et al. 2018

Metals

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The effects of deep cryogenic treatment (DCT) on the wear behavior of different tool steels have been widely reported in the scientific literature with uneven results. Some tool steels show a significant improvement in their wear resistance when they have been cryogenically treated while others exhibit no relevant amelioration or even a reduction in their wear resistance. In this study, the influence of DCT was investigated for a grade that has been barely studied in the scientific literature, the AISI A8 air-hardening medium-alloy cold work tool steel. Several aspects were analyzed in the present work: the wear resistance of the alloy, the internal residual stress, and finally the secondary carbide precipitation in terms of lengths and occupied area and its distribution into the microstructure. The results revealed a reduction in the wear rate of about 14% when the AISI A8 was cryogenically treated before tempering. The number of carbides that precipitated into the microstructure was 6% higher for the cryogenically treated samples, increasing from 0.68% to 0.73% of the total area they covered. Furthermore, the distribution of the carbides into the microstructure was more homogenous for the cryogenically treated samples. Author Contributions: Methodology, P.J.; Investigation, P.J.; Project administration, P.J.; Writing-original draft, P.J.; Software, M.I.; Data curation, M.I. and J.I.; Validation, R.F.-M.; Writing-review and editing, R.F.-M. and J.I.

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Section: Introductionmentioning

confidence: 99%

Influence of Cryogenic Treatment on Wear Resistance and Microstructure of AISI A8 Tool Steel

Jimbert¹,

Iturrondobeitia²,

Ibarretxe³

et al. 2018

Metals

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“…Li et al performed experimental trials to study the effects of DCT on high-vanadium alloy steel microstructure and mechanical properties [95]. Enormous amounts of small secondary carbide precipitation and microcracks at the carbide and matrix interfaces were observed after execution of DCT.…”

Section: Effects Of Ct On Microstructure Alteration and Wear Resismentioning

confidence: 99%

Correlation between Microstructural Alteration, Mechanical Properties and Manufacturability after Cryogenic Treatment: A Review

2019

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Cryogenic treatment is a supplemental structural and mechanical properties refinement process to conventional heat treatment processes, quenching, and tempering. Cryogenic treatment encourages the improvement of material properties and durability by means of microstructural alteration comprising phase transfer, particle size, and distribution. These effects are almost permanent and irreversible; furthermore, cryogenic treatment is recognized as an eco-friendly, nontoxic, and nonexplosive process. In addition, to encourage the application of sustainable techniques in mechanical and manufacturing engineering and to improve productivity in current competitive markets, cryo-treatment can be considered as a promising process. However, while improvements in the properties of materials after cryogenic treatment are discussed by the majority of reported studies, the correlation between microstructural alteration and mechanical properties are unclear, and sometimes the conducted investigations are contradictory with each other. These contradictions provide different approaches to perform and combine cryogenic treatment with pre-and post-processing. The present literature survey, mainly focused on the last decade, is aimed to address the effects of cryogenic treatment on microstructural alteration and to correlate these changes with mechanical property variations as a consequence of cryo-processing. The conclusion of the current review discusses the development and outlines the trends for the future research in this field.

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“…Although nitrogen is capable of being introduced into the melt by blowing N-bearing gases, the final composition of the melt is generally corrected by adding N-bearing alloys. Up to now, various alloys, including vanadium nitride (VN), vanadium carbonitride (V(C, N)) and ferrovanadium nitride (FeVN), have been proposed for the combined introduction of vanadium and nitrogen into the molten steel [5][6][7][8][9]. Vanadium carbonitride has been researched for many years; however, its practical use is inhibited by its low briquette density (≈3 g/cm 3…”

Section: Introductionmentioning

confidence: 99%

Reduction and Nitridation of Iron/Vanadium Oxides by Ammonia Gas: Mechanism and Preparation of FeV45N Alloy

Liu

Wang

You

et al. 2020

Metals

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The steel micro-alloyed with ferrovanadium nitride has extremely superior properties that make it widely utilized in structural components, construction and aircraft. The conventional methods for synthesizing ferrovanadium nitride include nitridation of pure ferrovanadium alloy or carbothermal nitridation of metallic oxides, using nitrogen or ammonia gas as nitrogen sources. In this study, ferrovanadium nitride (FeV45N) was prepared by direct reduction and nitridation of the corresponding metal oxides with ammonia as the reductant and nitrogen source. This method avoids the introduction of other impurity elements, except the negligible trace elements accompanied with the raw materials. The thermodynamics of the reduction and nitridation process were initially analyzed. During the subsequent ammonia reduction process, the FeV45N powders were successfully obtained at 1273 K for 6 h. The obtained powders were pressed into cylindrical briquettes by hot pressing (HP) at 1473 K for 1 h in vacuum. In the investigation, the X-ray diffraction and morphological analysis of the products was also carried out, and the reaction mechanisms were discussed in detail. The nitrogen content of the final product can reach 11.85 wt. %, and the residual oxygen content can be reduced to 0.25 wt. %. By sintering, the density of the alloy can reach 5.92 g/cm 3 .

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The influence of deep cryogenic treatment on the properties of high-vanadium alloy steel

Cited by 74 publications

References 27 publications

Influence of Cryogenic Treatment on Wear Resistance and Microstructure of AISI A8 Tool Steel

Influence of Cryogenic Treatment on Wear Resistance and Microstructure of AISI A8 Tool Steel

Correlation between Microstructural Alteration, Mechanical Properties and Manufacturability after Cryogenic Treatment: A Review

Reduction and Nitridation of Iron/Vanadium Oxides by Ammonia Gas: Mechanism and Preparation of FeV45N Alloy

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