Effect of titanium microalloying on microstructure and mechanical properties of vanadium microalloyed steels for hot forging

Zhao, Fan; He, Guoqiu; Liu, Yazheng; Zhang, Zhihao; Xie, Jun

doi:10.1007/s42243-021-00629-8

Cited by 9 publications

(6 citation statements)

References 27 publications

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“…The blast-furnace off gas replaces the hot blast (air) into the blast furnace which will change the gas composition inside the blast furnace. [23,24] Based on the ratio of CO 2 to CO in the blast-furnace gas and the temperature of TiC formation inside the blast furnace, [25][26][27][28] the experimental scheme is determined as listed in Table 1.…”

Section: Experimental Principlementioning

confidence: 99%

Oxidation Kinetics and Mechanism of TiC with Simulated Blast‐Furnace Gases

Zhang,

Shen,

Zhang

et al. 2024

steel research int.

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A high amount of TiO2 in the blast‐furnace slag during the smelting of vanadium‐bearing titanomagnetite can generate TiC, resulting in poor metallurgical properties of the slag. Based on this background, the oxidation of TiC by CO2 in the blast‐furnace gas and its kinetics are discussed in this article, to achieve control over the generation of TiC. The results show that TiC is oxidized by the CO2 in the blast‐furnace gas, generating TiO2. The oxidation rate increases upon increasing the oxidation temperature, at all oxidation stages in the same atmosphere. At a given temperature, a higher volume fraction of CO2 in the atmosphere is conducive to the faster oxidation of TiC. The oxidation of TiC is mainly controlled by the interfacial chemical reaction at the initial stage and by the mixed control of the interfacial chemical reaction and internal diffusion at a later stage.

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Section: Experimental Principlementioning

confidence: 99%

Oxidation Kinetics and Mechanism of TiC with Simulated Blast‐Furnace Gases

Zhang,

Shen,

Zhang

et al. 2024

steel research int.

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“…The prior austenite grain and sorbite lamellar spacing have important effects on toughness. 44,45 There is no definite conclusion about it. As far as the experimental results are concerned, the prior austenite grain size, pearlite colony size, and sorbite lamellar spacing might have some influence on it.…”

Section: Construction Of Microstructureproperties Relationship Modelmentioning

confidence: 99%

Relationship of microstructure on the mechanical and splitting fracture properties of a high carbon forging steel for connecting rod

Li,

Wang,

Zhang

et al. 2024

Fatigue Fract Eng Mat Struct

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The influence of austenitizing temperature and isothermal transition temperature on the mechanical properties and splitting characteristics of C70S6 were investigated. The maximum ultimate tensile strength and yield strength were 1032 and 625 MPa, respectively, when the lamellar spacing of sorbite was 0.195 μm. The greatest elongation was 17% when the size of the pearlite colony was 13 μm, which suggested an approach for enhancing the properties of pearlite steel at a low cost. The splitting property performed excellent when the proeutectoid ferrite content is 0.3%, the prior austenite grain is 38.9 μm, and the yield ratio is 0.57 currently. The connection between the process performance and the microstructure parameters was established, allowing process improvement to be guided accurately.

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“…There are two main research directions for hot-working die steel. One is to optimize the compositions of die steels [ 23 , 24 , 25 , 26 ]. Most of them are developing towards low carbon and low alloying elements.…”

Section: Development In Composition Optimization Of Die Steel For Int...mentioning

confidence: 99%

Development Trend in Composition Optimization, Microstructure Manipulation, and Strengthening Methods of Die Steels under Lightweight and Integrated Die Casting

Bao,

Yang,

Dong

et al. 2023

Materials

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In the general environment of lightweight automobiles, the integrated die-casting technology proposed by Tesla has become the general mode to better achieve weight reduction in automobiles. The die-casting mold required by integrated die-casting technology has the characteristics of large scale and complexity. Hence, higher requirements are put forward for the comprehensive performance of the die steel. Despite the stagnation in the progress of conventional strengthening methods, enhancing the performance of die steel has become increasingly challenging. Indeed, it necessitates exploring novel die steel and optimizing heat treatment and reinforcement technologies. This article summarizes and analyzes the development status of die steel and corresponding heat treatment and microstructure manipulation as well as strengthening methods and elaborates on an excellent nano-strengthening technology. Furthermore, this review will aid researchers in establishing a comprehensive understanding of the development status of die steel and the processes utilized for its strengthening. It will also assist them in developing die steel with improved comprehensive performance to meet the high demand for mold steel in the integrated die-casting technology of the new era.

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Effect of titanium microalloying on microstructure and mechanical properties of vanadium microalloyed steels for hot forging

Cited by 9 publications

References 27 publications

Oxidation Kinetics and Mechanism of TiC with Simulated Blast‐Furnace Gases

Oxidation Kinetics and Mechanism of TiC with Simulated Blast‐Furnace Gases

Relationship of microstructure on the mechanical and splitting fracture properties of a high carbon forging steel for connecting rod

Development Trend in Composition Optimization, Microstructure Manipulation, and Strengthening Methods of Die Steels under Lightweight and Integrated Die Casting

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