Effects of Two Different Cyclic Heat Treatments on Microstructure and Mechanical Properties of Ti-V Microalloyed Steel

Zheng, Lei; Xue-ping, Ren; Li, Zhihong; Lu, Zhichao; Gao, Ming

doi:10.1590/1516-1439.302414

Cited by 13 publications

(4 citation statements)

References 15 publications

(15 reference statements)

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“…The elongation of the TD2 alloy reached its highest value of 14.7% after heat treatment at 900 • C, which increased by 36% compared to the as-deposited state of 10.8%. After heat treatment, the strength of the alloy decreased, and the plasticity improved primarily due to the spheroidization of the α-platelets in the TC4ELI titanium alloy region and the transformation of the needle-like α-phase in the TC21 titanium alloy region into α + β phase as shown in Figures 7 and 8 [21]. Secondly, after heat treatment, the α-phase clearly coarsened, and the β-phase content increased significantly.…”

Section: Mechanical Properties and Fracture Behaviourmentioning

confidence: 95%

Study on Microstructure and Properties of Additive-Manufactured TC4ELI+TC21 Titanium Alloy Gradient Composite Structures

Cui,

Ji,

Han

et al. 2024

Coatings

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TC4ELI+TC21 titanium gradient composite structures with direct transition (TD1) and cross transition (TD2) were prepared using laser deposition manufacturing technology. The microstructure of the gradient interface was observed, and the distribution of alloying elements was detected. The tensile properties of the two alloys at room temperature were tested, and the effects of different heat treatment regimens on the microstructure and mechanical properties were investigated. The results show that there is no obvious defect at the gradient interface of the two alloys. Compared with direct transition alloys, the alloying elements of TD2 alloys change less at the interface, the structure of the transition zone is more closely bound, and the elongation is higher. After heat treatment, the α phase in the alloy is coarsened, and the alloy elements at the interface are fully diffused, so that the gradient interface of the alloy is eliminated to a certain extent, the tensile strength of the alloy decreases, and elongation increases. The strength and plasticity of the alloy reached their best match at a solution temperature of 930 °C.

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Section: Mechanical Properties and Fracture Behaviourmentioning

confidence: 95%

Study on Microstructure and Properties of Additive-Manufactured TC4ELI+TC21 Titanium Alloy Gradient Composite Structures

Cui,

Ji,

Han

et al. 2024

Coatings

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“…Compared with the conventional deoxidation process, the tensile strength and low temperature impact strength of the steel were increased by 24.56% and 24.00%, respectively. A range of ship plate steel products for high heat input welding were developed [43]. Furthermore, Yang's team from Shanghai University had long studied the effects of Mg treatment on inclusions in steel and the properties of welding HAZ, and they concluded that Mg treatment could refine inclusions and improve the toughness of HAZ [44][45][46].…”

Section: Development Of Oxide Metallurgy Technologymentioning

confidence: 99%

Oxide Metallurgy Technology in High Strength Steel: A Review

et al. 2022

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Oxide metallurgy technology plays an important role in inclusion control and is also applied to improve the weldability of high strength steel. Based on the requirements of the weldability in high strength steel, the influencing factors of weld heat affected zone (HAZ) as well as the development and application status of oxide metallurgy technology are summarized in this review. Moreover, the advantages and difficulties in the application of rare earth (RE) oxide metallurgy technology are analyzed, combined with the performance mechanism of RE and its formation characteristics of fine and high melting point RE inclusions with distribution dispersed in liquid steel. With the weldability diversities of different high strength steels, the research status of weldability of high strength steel with high carbon equivalent and the effects of RE on the microstructure and properties of HAZ are discussed, and some suggestions about further research in the future are proposed.

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“…Regarding the chemical composition, controlling the normalizing parameters can deliver the mechanical properties in the optimum state. Ti and V are one of the most frequently used combinations among the microalloying elements [5][6][7]. In comparison with Nb, Ti is largely used due to its low economic cost.…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Normalizing Processes on Microstructure, Precipitation Behavior and Mechanical Properties of V-Ti-Micro-Alloyed Steel Alloys

Hamed

Eissa

Kandil

et al. 2020

KEM

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Normalizing is an effective heat treatment in improving the microstructure and developing the mechanical properties of micro-alloyed steel. The normalizing parameters such as temperature and holding time are the main keys to microstructure and mechanical properties controlling. Therefore, obtaining an optimum combination of mechanical properties must be subjected to an ideal combination of these parameters. Furthermore, adjusting the optimum normalizing parameters must be considered for every chemical composition depending on the critical transformation temperatures. In this work, four micro-alloyed steel alloys containing V (0.008-0.1wt %) and Ti (0.002-0.072) were held on different normalizing temperatures for 30 minutes. The first holding temperature was carried out just above the Ac3 temperature and the second was carried out above the Ac3 by 100°C (Ac3+100°C). With the controlled normalizing condition, V-Ti-micro-alloyed steel alloy has produced an ultra-fine structure of grain size 2.2 microns and combined high strength of 725 MPa YS, 1058 MPa UTS and good ductility of 20%.

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Effects of Two Different Cyclic Heat Treatments on Microstructure and Mechanical Properties of Ti-V Microalloyed Steel

Cited by 13 publications

References 15 publications

Study on Microstructure and Properties of Additive-Manufactured TC4ELI+TC21 Titanium Alloy Gradient Composite Structures

Study on Microstructure and Properties of Additive-Manufactured TC4ELI+TC21 Titanium Alloy Gradient Composite Structures

Oxide Metallurgy Technology in High Strength Steel: A Review

Effect of Different Normalizing Processes on Microstructure, Precipitation Behavior and Mechanical Properties of V-Ti-Micro-Alloyed Steel Alloys

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