Fracture Toughness and Fracture Mechanism of EH47 High-Strength Steel Subjected to Different Temperatures

Xue, Chunyang; Yang, Ming; Liu, Peng; Cheng, Yuan; Shang, Xinchun; Ren, Xuechong

doi:10.1007/s11661-022-06763-6

Cited by 7 publications

(2 citation statements)

References 41 publications

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“…The fracture toughness testing specimen was 25 mm thick, the ligament length W was 50 mm, the width L = 62. [26][27][28] We used the scanning electron microscope (SEM) to analyze the fracture surface characteristics of the CT specimen tested under various temperatures. 29 Besides, the intersecting surface of the fracture surfaces was observed to determine the brittle crack propagation path.…”

Section: Fracture Toughness and Crack Arrest Toughness Testsmentioning

confidence: 99%

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Effects of rolling process and microstructure on the brittle crack initiation and arrest of a marine steel under low‐temperature

Xue,

Yang,

Liu

et al. 2024

Fatigue Fract Eng Mat Struct

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The effects of the rolling process and microstructure on the brittle crack initiation and arrest of marine steel were systematically investigated. The microstructures of two steel plates produced by different rolling processes were observed and analyzed. The results demonstrated that the rolling process significantly influenced the microstructure. As the rolling temperature decreased, the grain size decreased, the high‐angle grain boundary (HAGB) content increased, and the average grain misorientation angle increased. The brittle crack initiation and the arrest abilities were evaluated by initiation fracture toughness and crack arrest toughness, respectively. The initiation fracture toughness and crack arrest toughness increased with the decreasing grain size and the increasing content of HAGBs. Finally, the influence of microstructure on the brittle crack initiation and arrest ability was explained from two aspects: (1) the critical event of crack initiation at low temperatures, and (2) the hindering effect of HAGB on the propagation of brittle cracks.

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Section: Fracture Toughness and Crack Arrest Toughness Testsmentioning

confidence: 99%

“…The ligament length W a was 200 mm, d = 20 mm, d 1 = d 2 = 25 mm, H 1 = 2 H 2 = 100 mm, H 3 = 20 mm, L = 180 mm. The details of the fracture toughness and crack arrest toughness testing process and test device have been introduced in our previous articles 26–28 …”

Section: Materials and Experimental Proceduresmentioning

confidence: 99%