专利名称:Steel plate
发明人:戸田 由梨,桜田 栄作,林 邦夫,上西 朗弘申请号:JP2018535443申请日:20180330
公开号:JPWO2019186989A1公开日:20200430
专利附图:
摘要:The steel plate has a predetermined chemical composition, has a surfaceintegral factor, and has a metallostructure represented by a polygonal ferrite: 40% orless, a martensite of 20% or less, a batitic Ferrite: 50% to 95% and a remaining austeniteof 5% to 50%.With a surface integral factor, more than 80% of the bainitic ferrite iscomposed of a bainitic ferrite grain having a dislocation density of less than 8. Times. 10.Sup. 8 cm \\/ cm. Sup. 3 at an aspect ratio of 0.1 to 1.0 and an azimuth having an orientationdifference of 15 ° or more.With the surface integral factor, more than 80% of the residual
austenites are composed of residual austenite grains having an aspect ratio of 0.1 to 1.0,a long axis length of 1.0. Mu. M to 28.0. Mu. M and a short axis length of 0.1. Mu. M to 2.8.Mu. M.
申请人:日本製鉄株式会社
地址:東京都千代田区丸の内二丁目6番1号
国籍:JP
代理人:國分 孝悦
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