Effect of Zr-deoxidation on microstructure and mechanical behavior of microalloyed heavy plates with low impurity content

Hu, Chengyang; Dong, Hangyu; Wu, Kaiming; Misra, R.D.K.; Zhong, Lei; Jin, Xing; Li, Qiang

doi:10.1007/s42243-020-00525-7

Cited by 4 publications

(2 citation statements)

References 28 publications

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“…In this work, the inclusions are found to be almost spherical in shape, forming a typical core–shell structure, with (RE–Mg–Al–Ca)–O x S y in the center and CaS and TiN at the periphery. The addition of Zr, Ca and RE has an obvious spheroidization effect on the inclusions [ 54 , 55 , 56 ]. The appearance of Mg is attributed to the refractory bricks used in steelmaking.…”

Section: Resultsmentioning

confidence: 99%

Local Corrosion Behaviors in the Coarse-Grained Heat-Affected Zone in a Newly Developed Zr–Ti–Al–RE Deoxidized High-Strength Low-Alloy Steel

et al. 2023

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Oxide metallurgy technology can improve the microstructure of a coarse-grained heat-affected zone (CGHAZ) but introduces extra inclusions. Local corrosion behavior of the CGHAZ of a Zr–Ti–Al–RE deoxidized steel was investigated in this work using theoretical calculations and experimental verification. The modified inclusions have a (Zr–Mg–Al–Ca–RE)Ox core claded by a CaS and TiN shell. CaS dissolves first, followed by the oxide core, leaving TiN parts. This confirms that the addition of rare earth can reduce lattice distortion and prevent a galvanic couple between the inclusions and the matrix, while the chemical dissolution of CaS causes localized acidification, resulting in the pitting corrosion initiation.

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Section: Resultsmentioning

confidence: 99%

Local Corrosion Behaviors in the Coarse-Grained Heat-Affected Zone in a Newly Developed Zr–Ti–Al–RE Deoxidized High-Strength Low-Alloy Steel

et al. 2023

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“…However, the requirement of a low-temperature mechanical structure only for cryogenic equipment is one-sided [18]. To mitigate the risk of equipment failure due to low-temperature brittleness, multiple aspects, such as material properties, structural design, and manufacturing processes, need to be addressed [19][20][21][22][23][24]. A comprehensive examination of the effect of various factors on material toughness at low temperatures is necessary.…”

Section: Studies On the Strength And Toughness Of Polar Low-temperatu...mentioning

confidence: 99%

Current Status and Trends of Low-Temperature Steel Used in Polar Regions

Xiao,

Xie,

et al. 2024

Materials

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The desire to explore the natural resources and geopolitical patterns of the North and South Poles has significantly increased the interest of experts and researchers in the development and utilization of the polar regions. In this article, we comprehensively analyzed the current state of the development of polar low-temperature steel around the world. We highlighted the challenges that must be addressed in the ongoing development efforts and summarized the expected future trends in this field. The main theme of this article involves the challenges encountered in polar environments primarily caused by the low-temperature toughness and seawater corrosion of marine steel.

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Effects of deoxidation methods on the inclusion characteristics and corrosion behaviour of high-strength low-alloy steels in marine environments

Wang,

Zhang,

Peng

et al. 2024

Journal of Materials Research and Technology

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Effect of Zr-deoxidation on microstructure and mechanical behavior of microalloyed heavy plates with low impurity content

Cited by 4 publications

References 28 publications

Local Corrosion Behaviors in the Coarse-Grained Heat-Affected Zone in a Newly Developed Zr–Ti–Al–RE Deoxidized High-Strength Low-Alloy Steel

Local Corrosion Behaviors in the Coarse-Grained Heat-Affected Zone in a Newly Developed Zr–Ti–Al–RE Deoxidized High-Strength Low-Alloy Steel

Current Status and Trends of Low-Temperature Steel Used in Polar Regions

Effects of deoxidation methods on the inclusion characteristics and corrosion behaviour of high-strength low-alloy steels in marine environments

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