Effect of temperature on the fracture toughness of A516 Gr70 steel

Abstract

Fracture toughness HC and KIC tests were performed on ASI6 Or70 carbon steel plate at the temperature ranging from -160'C to 600'C, and test results were analyzed according to ASTM E 813 and ASTM E 399. Unloading compliance J-integral tests were performed on ITCT specimens. The relation between the J Ie value and the test temperature was obtained. It was concluded that the temperature ranging from -IS'C to 600'C is the upper shelf region of ductile-brittle transition temperature, and in this temperature range, fracture toughness J re values decreased with increasing temperature. The ductile brittle transition temperature of the material may be around -30·C. In the region near -30'C, the tendency of J Ie to decrease with decreasing temperature was significant.

Influence of Specimen Configuration and TIG Welding on Fracture Toughness of RAFs (JLF-1)

“…Regarding the fracture toughness, smaller size test specimens have been used because limited availability of effective irradiation volumes in test reactors [5,6]. However, fracture toughness and R-curve is affected by welding, temperature and configuration of specimen such as side-groove, thickness and ligament [7][8][9]. Therefore, the purpose of this paper is to evaluate the variation of R-curve as TIG welding, test temperature and specimen configuration.…”

Numerical Fracture Mechanics Evaluation on Surface Cracks in a Spherical Oxygen Holder

“…4.1 유한요소모델 표면균열이 내재된 구형 산소용기의 J-적분 해석을 위해 3장에서 제안한 등가 유한요소모델을 이용하였 으며, 탄소성 파괴역학 해석을 위한 재료물성으로 석 창성의 실험연구(9) 결과를 이용하였다.Fig. 10은데이 터를 곡선적합(curve fitting)하여 구한 J-R선도를 나타 낸 것으로써, 관련 재료물성치는Table 3에정리하였다.…”