Development and application research of light weight heat treated B-grade bulletproof steel  

作　　者：Ma Mingtu Chen Gang Ma Yuhao Li Zhigang Feng Yi 

机构地区：[1]China Automotive Engineering Research Institute Co. Ltd., Chongqing 401122, China [2]Shanghai Baosteel Hot Stamping Co. Ltd., Shanghai 201900, China [3]Chongqing Haisen Electromechanics Co. Ltd., Chongqing 400039, China

出　　处：《Engineering Sciences》2014年第5期2-7,共6页中国工程科学（英文版）

摘　　要：The light weight heat treated B-grade bulletproof steel was developed through composition design and optimization based on multiplex alloying,multiplex micro-alloying design ideas and complex phase structure strengthening theory.The puzzle how to avoid the quenching deformation problem of super high strength thin sheet was solved through heat treatment in a die with a set of cooling system.Such B-grade bulletproof steel plate has fine tempered lath martensite structure.The shooting and certification test results showed that the shoot resistance of B-grade bulletproof steel plate can meet the protection demand of Protection specification for cash carrying vehicles(GA 164—2005).In comparison with B-grade bulletproof steel plate made by one of the companies in Sweden,the weight of the developed B-grade bulletproof steel plate can be decreased by 8 %under the same shoot resistance condition.It will be meaningful for cash truck and anti-hijacking vehicle to realize light weight,energy conservation and emission reduction.

关 键 词：alloying composition design die quenching super high strength B-grade bulletproof steel application research 

分 类 号：TG146.21[一般工业技术—材料科学与工程] U671.8[金属学及工艺—金属材料]