フェライト・パーライト型非調質鋼の機械的性質に及ぼすC, V量の影響
1994 年 65 巻 1 号 p. 22-30
詳細
1994 年 65 巻 1 号 p. 22-30
The influence of carbon and vanadium contents on mechanical properties of ferrite-pearlite microalloyed steels was investigated by instrumented Charpy impact tests, tensile tests, rotating bending tests and microstructure observation. The following was obtained.
(1) The crack initiation energy in impact test is not affected by carbon and vanadium contents.
(2) The change in Charpy impact value is related to the crack propagation energy.
(3) The optimum balance of carbon and vanadium contents for the crack propagation energy varies corresponding to the aimed hardness.
(4) The fatigue limit of ferrite-pearlite steels is effectively improved by vanadium addition in comparison with carbon.
