Effects of V-Notch Dimensions on Charpy Impact Test Results for Differently Sized Miniature Specimens of Ferritic Steel

Recent advances in friction-stir welding – Process, weldment structure and properties

“…Fig. 29 shows toughness data for the stir zone of the weld, all of which meet a minimum requirement of 27 J at -18 • C [181]; a later study revealed larger values of toughness but those data are on half-size Charpy specimens and hence not suitable for direct comparison [197][198][199]. The Charpy test itself is recognised to be an empirical measure of toughness, of use in quality control but not as an aid to design.…”

Mechanical properties of small size specimens of F82H steel

“…Dependence of specimen size on Charpy impact energy as a function of temperature, using t/2-CVN, 1/3CVN and t/2-1/3CVN specimens of F82H-std (low N). [22][23][24][25]. The empirical correlations of DBTT of fullsize and sub-size specimens in reactor pressure vessel (RPV) steels were proposed:…”

Empirical Correlation of Specimen Size Effects in Charpy Impact Properties of 11Cr-0.5Mo-2W, V, Nb Ferritic-Martensitic Stainless Steel

“…7,13) The Kt is defined as the ratio of stress at notch root to the average stress, and that is determined from specimen's notch depth, notch root radius, notch angle and specimen's width as shown by Nishida. 7,13) The Kt is defined as the ratio of stress at notch root to the average stress, and that is determined from specimen's notch depth, notch root radius, notch angle and specimen's width as shown by Nishida.…”

“…[7][8][9][10][11][12][13][14][15][16][17] Corwin et al 9) empirically used a normalization factor of USE as ðBbÞ 3=2 , and Lucas et al 15) used as Bb 2 , where B is the specimen thickness and b is the ligament size. It is well known that small specimen test technology is required in Charpy impact testing, because the available irradiation volume is very limited in the reactor and future accelerator-based intense neutron sources.…”