The materials used for penetrating warhead shells require high strength and toughness.Ultrahigh strength steel with low cost and excellent toughness has become the preferred material for penetrating warhead shells.The typical steel grades,composition,properties and development history of these materials were firstly reviewed,the strengthening and toughening mechanisms of typical ultrahigh strength steels were focused on and the need for performance of the materials was explored.Then,strengthening and toughening mechanisms of low-alloy ultrahigh strength steel and secondary hardening ultrahigh strength steel,"multiphase,metastable,multiscale"microstructure and nanocomposite precipitation were introduced,and the difficulties in the development of these materials were analyzed.Finally,the development directions of high purity,high microstructure uniformity,multiphase microstructure control and low cost were discussed.
关键词
侵彻战斗部/超高强度钢/强韧性/纳米复合沉淀/性能需求
Key words
penetration warhead/ultrahigh strength steel/strength and toughness/nanocomposite precipitation/performance requirement
维普
万方数据