Mechanical properties evaluation of ReBCO CICC jacket based on super-austenitic stainless steel for CFETR high-field magnet

Zhao, Chuanyi; Jin, Huan; Huang, Chuanjun; Li, Laifeng; Tu, Zhengping; Xu, Bin; Zhai, Ruzong; Li, Jiangang; Qin, Jinggang

doi:10.1016/j.nme.2022.101344

Cited by 6 publications

(3 citation statements)

References 9 publications

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“…The critical current is known to be dependent on strain [24,25]. At approximately 0.55% strain the conductor shows considerable critical current degradation.…”

Section: Strain Dependence Of Critical Currentmentioning

confidence: 99%

Screening current rotation effects: SCIF and strain in REBCO magnets

Bond

Bird

Dixon

et al. 2021

Supercond. Sci. Technol.

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Screening currents and their effect on the magnetic field and strain state have been shown to be a major problem in the design and operation of rare-earth-barium-copper-oxide magnets, distorting the field and rotating the conductor to potentially large strains. The latter is a possible catalyst for damage as both plastic deformation and degradation of the critical current leading to reduced fatigue life or even catostrophic failure. Due to the nonlinear dynamic behavior of the screening currents and the significant possible rotation, including this rotational effect in the electromagnetic state requires a new addition to the existing models. The effect of the changing rotation angle of the conductor on the electromagnetic and stress state is investigated by using a modified homogeneous T–A method. Numerical results are compared with experimental tests.

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“…The critical current is known to be dependent on strain [24,25]. At approximately 0.55% strain the conductor shows considerable critical current degradation.…”

Section: Strain Dependence Of Critical Currentmentioning

confidence: 99%

Screening current rotation effects: SCIF and strain in REBCO magnets

Bond

Bird

Dixon

et al. 2021

Supercond. Sci. Technol.

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“…Further, the square pipes with a round inner diameter were made from the rods through hot extrusion and cold rolling in the last stage. After the production of the pipes, final heat treatment was carried out at 1130 °C, 30 min, cooling in water [12,13].…”

Section: Methodsmentioning

confidence: 99%

“…In this study, the austenitic, corrosion-resistant N50 steel, which is used in the production of high-strength, cryogenic pipes for cable-in-conduit conductors (CICC) of Chinese fusion engineering test reactor (CFETR) was investigated [12,13]. The nitrogen content of this steel usually lies within the range of 0.2-0.38 wt%.…”

Section: Introductionmentioning

confidence: 99%

Effect of aging on the structure and mechanical properties of austenite stainless steel N50 alloyed with nitrogen, niobium and vanadium

Muradian,

Liu,

Sun

2024

Mater. Res. Express

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In this study, the austenitic, corrosion-resistant N50 steel alloyed with different nitrogen, niobium and vanadium content was investigated. This steel is used in the production of high-strength, cryogenic pipes. The production process for these pipes involves aging at 650 °C–665 °C for 50–100 h. Therefore, steels were examined in their as-delivered state, after aging at 650 °C, 100 h and after solid solution heat treatment. The structure of the steel was analyzed using optical and scanning microscopy, tensile and impact strength tests were conducted at room temperature and at −196 °C. It was found that the total volume fraction of the precipitated phase after aging is more dependent on the total concentration of nitride-forming elements—Nb and V, than on nitrogen. Aging does not affect the basic operational properties at room temperature, but it can significantly affect toughness at −196 °C.

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