IF钢的开发

THE DEVELOPMENT OF IF STEEL

汽车工业的迅速发展，促进了汽车用钢的发展。Ｃ、Ｎ含量极低的无间隙原子（ＩＦ）钢由于具有极好的成型性能，是理想的车身用钢。本文叙述了ＩＦ钢的发展过程、生产工艺及强化机理。

The automobile steel production has been promoted by the rpaid exparding of the automobile industry. Lower in C and N contents,the interstitial free(IF) steel has excellent forming performance and adaptability for the use in automobile body.The present paper describes the development of IF steel,its technological process and strengthening mechanism.