Ti-P添加極低炭素冷延鋼板の機械的性質に及ぼす焼鈍温度の影響
1989 年 75 巻 12 号 p. 2210-2217
詳細
1989 年 75 巻 12 号 p. 2210-2217
The effect of annealing temperature on the mechanical properties of extra-low carbon cold-rolled steel sheet containing P and Ti was investigated. The obtained results are as follows :
1) The observed correlation of tensile propeprties with annealing temperature is interpreted in terms of a newly proposed strengthening mechanism which differs from the previously suggested one.
2) Precipitation strengthening calculated from Ashby-Orowan model for steel sheet continuously annealed in the temperature range of 750-810°C for 30 seconds is about 80 MPa.
3) In extra-low carbon cold-rolled steel sheet containing P and Ti, effective Ti content can be expressed more realistically by Ti** = Total Ti-(48/14)N-(48/32)S-Ti as (Fe, Ti)P than by the previous equation, Ti* = Total Ti-(48/14)N-(48/32)S.
