Influence of specimen dimensions on ductile-to-brittle transition temperature in Charpy impact test

4th International Conference Recent Trends in Structural Materials

Rzepa, S.^1 ; Bucki, T.^2 ; Konopík, P.^3 ; Dugan, J.^3 ; Rund, M.^3 ; Procházka, R.^3

AGH University of Science and Technology, Kraków, EU, Poland^1

Kielce University of Technology, EU, Kielce, Poland^2

COMTES FHT A.s., Dobany, EU, Czech Republic^3

关键词: Charpy specimen;    Ductile-to-brittle transition temperature;    Fracture appearance;    Full-size specimens;    Notch toughness;    Specimen dimension;    Temperature determination;    Transition curves;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/179/1/012063/pdf
DOI  :  10.1088/1757-899X/179/1/012063

来源: IOP

【 摘 要 】

This paper discusses the correlation between specimen dimensions and transition temperature. Notch toughness properties of Standard Charpy-V specimens are compared to samples with lower width (7.5 mm, 5 mm, 2.5 mm) and sub-size Charpy specimens with cross section 34. In this study transition curves are correlated with lateral ductile part of fracture related ones for 5 considered geometries. Based on the results obtained, correlation procedure for transition temperature determination of full size specimens defined by fracture appearance of sub-sized specimens is proposed.