Rare Earth microalloied elements' influence on the organization and capability of X65 pipeline steel

Liu, Yuyan; Bao, Xirong; Lin, Chao; Jin, Zili; Ren, Hiping

doi:10.1016/s1002-0721(10)60349-3

Cited by 7 publications

(3 citation statements)

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“…In order to keep the sample in an unidirectional deformation state in the process of deformation, the tantalum plates are sticked on the two ends of the sample to reduce the friction between the contact surfaces. It also protects the sample the compression anvils and sample from sticking together, so that the sample can stay the shape of cylinder before and after the experiment [2].…”

Section: Methodsmentioning

confidence: 99%

High Temperature Compression Deformation Behavior and Rheological Stress Model of HRB400

Liu

Zang

Wang

et al. 2013

AMM

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A series single-pass compression tests of HRB400 slab under the circumstances of different deformation temperature and deformation rate are carried out with Gleeble-1500D thermal simulation testing machine. The experimental results shows as follows. The true stress-true strain curves of the compression process are got from the tests. The state activation energy is 353.542kJ/mol and a mathematical model of high-temperature rheological stress is established. The calculated results by the rheological model are consistent with the experiments.

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Section: Methodsmentioning

confidence: 99%

High Temperature Compression Deformation Behavior and Rheological Stress Model of HRB400

Liu

Zang

Wang

et al. 2013

AMM

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“…Zhu et al [19] investigated the effect of rare earth Y on microstructure and texture of oriented silicon steel during hot rolling and cold rolling processes. It is worth noting that the previous research [17][18][19][20][21] on rare earth grain-oriented silicon steel mainly focused on the evolution of microstructure and texture, and the magnetic properties of the ultimate products were poor. The addition of excessive rare earth will lead to the formation of numerous coarse rare earth inclusions and cause the failure The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/srin.202400022.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Rare Earth Y on the Inhibitor Precipitation Behavior of Strip‐Cast Grain‐Oriented Silicon Steel

Wang,

Zhang

et al. 2024

steel research int.

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0.3 mm‐thick grain‐oriented silicon steel sheets with varying Y contents are produced via twin‐roll strip‐casting and two‐stage cold rolling process. This study primarily investigates the evolution of microstructure, texture, and precipitation along the processing. Specifically, the effect of rare earth Y on second‐phase particle precipitation in ultralow carbon grain‐oriented silicon steel is examined. Results indicate that higher Y content will consume beneficial inhibitor elements such as S and N, leading to the formation of coarse rare earth inclusions (≈10 μm) in the cast strip. This significantly diminishes inhibition ability and magnetic induction (B8 = 1.58 T≈1.71 T). On the contrary, the addition of trace Y can accelerate the precipitation of inhibitors. During the intermediate annealing stage, steel with trace Y exhibits a significant enhancement in precipitate distribution density (from 2.8 μm−2 to 13.6 μm−2), and the final magnetic induction B8 increases from 1.86 T to 1.91 T compared to steel without Y. In addition, the results of first‐principle calculations based on density functional theory reveal that the doped Y atom prefers to segregate at the Al–N interface, and the interface energy reduces from 1.871 J m−2 to 1.024 J m−2, thereby promoting the precipitation of AlN.

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“…In recently years, rare earths were used in various steels and made such positive effects as listed: improved the high temperature oxidation resistance of the heat resistant steel and ferritic steels [4,5]; improved the corrosion resistance of the Fe-Cr alloys and other steels [6][7][8][9][10][11][12]; improved the mechanical properties of many steels at room temperature and elevated temperature, and benefiting the hot workability [13][14][15][16][17][18][19][20][21]; modified the microstructures and inclusions in steels [22][23][24][25][26]；and so on. But due to the excessively active chemical properties, RE trend to react with other elements and materials, the yields of RE cannot be controlled prospectively, and the application of RE in steels are commonly restricted to laboratory scale, it has become the main reason of limiting RE's industrial application in steels.…”

Section: Introductionmentioning

confidence: 99%

Yields of rare earths in the process of smelting steels by magnesia crucible

Li¹,

Zhao²,

Liu³

2018

Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017)

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Abstract. Two types of steels containing rare earths (RE) were smelted by the vacuum induction furnace with magnesia crucible, RE metals were added in liquid steel at the end of the smelting process, chemical compositions of the test steels were analyzed, and inclusions were observed by scanning electron microscope with energy dispersive spectrometer. The experimental results show that the yields of RE have no direct relationship with the oxygen and sulphur contents, but decrease with the increasing of RE addition amounts. The reaction between RE and MgO (the material of the crucible) is the major RE consumption mode, parts of the outer refractory are peeled off and become inclusions in the test steels. Because of the excessively active chemical properties, rare earths trend to react with refractory materials and metallurgical slag. Therefore, it is very difficult to utilize RE in the industrial production processes with con-casting, adding RE in the non-slag and non-refractory special processes may be feasible.

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Rare Earth microalloied elements' influence on the organization and capability of X65 pipeline steel

Cited by 7 publications

References 0 publications

High Temperature Compression Deformation Behavior and Rheological Stress Model of HRB400

High Temperature Compression Deformation Behavior and Rheological Stress Model of HRB400

The Effect of Rare Earth Y on the Inhibitor Precipitation Behavior of Strip‐Cast Grain‐Oriented Silicon Steel

Yields of rare earths in the process of smelting steels by magnesia crucible

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