Alloying effect of 3d transition elements on the ductility of chromium

Effect of Al on High-Temperature Oxidation of Cr–W Alloys

“…Whether low room-temperature ductility arises from intrinsic (due to high Peierls stresses in the BCC structures) or extrinsic (due to grain-boundary segregation of impurities) properties is a matter of debate. There is theoretical and experimental work supporting both points of view [3][4][5][6][7][8][9][10][11][12]. Oxidation resistance of some refractory alloys, e.g.…”

Enhanced hydrogen embrittlement of Pd-coated niobium metal membrane detected by in situ small punch test under hydrogen permeation

“…The mechanical properties of the metal membrane specimens are investigated by the small punch (SP) test which is well known as an effective method to estimate a ductile-to-brittle transition phenomenon [10][11][12][13]. A schematic diagram is shown in Fig.…”

Room-temperature ductility and surface notch sensitivity of chromium alloyed with vanadium and molybdenum

“…The vanadium content was varied at three levels, 0.5, 1.0 and 5.0 mol%. It is known from our previous three-point bending test that Cr-0.5 mol%V alloy is more ductile than pure chromium, but the excess addition of vanadium (e. g., 1 mol%V) embrittles the specimen [8]. Each ingot was cut by a wire electrode discharge machine (WEDM) to make a thin-plate creep specimen with the size of 7 mm × 5 mm × 0.05 mm.…”

“…So, a relatively high G value might not be related directly to the difficulties of forming dislocations in chromium. In addition, the alloying of vanadium is known to be effective in improving room-temperature ductility; although the reason still remains unknown [8].…”