公开(公告)号：KR101967910B1

公开(公告)日：2019-04-10

申请号：KR1020170149844

申请日：2017-11-10

Applicant: 국방과학연구소

Inventor： 송영범 ,  이영국 ,  한정호 ,  강석현 ,  박지숙

IPC: C22C14/00 ,  C22F1/18 ,  B21B3/00

公开(公告)号：KR1020090100708A

公开(公告)日：2009-09-24

申请号：KR1020080026051

申请日：2008-03-20

Applicant: 국방과학연구소

Inventor： 이영국 ,  유찬수 ,  박용민

IPC: C22C38/40 ,  C21D8/02 ,  C21D8/00

CPC classification number: C22C38/58 ,  C21D8/005 ,  C21D2201/03 ,  C21D2211/001 ,  C21D2211/008 ,  C22C38/48 ,  C22C38/50 ,  C22C2200/00 ,  C22C2202/00

Abstract: PURPOSE: A steel of high intensity and high ductility and manufacturing method are provided to reduce the production cost by applying SIMRT process. CONSTITUTION: A method for manufacturing a steel of high intensity and high ductility with ultra fine grain comprises: a step of processing metastable qustenite steel over 40% of reduction ratio; a step of forming strain induced martensite; and a step of heating in the temperature range of martensite/austenite inverse transformation ending temperature. The metastable is Ni(7-11 weight%), Cr(8-2 weight%), Mn(2-10 weight%), remaining Fe and other impurities.

Abstract translation: 目的：提供高强度，高延展性和制造方法，通过应用SIMRT工艺降低生产成本。 构成：用超细晶粒制造高强度，高延展性的钢的方法包括：处理亚稳态季铵盐钢超过40％的还​​原比例的步骤; 形成应变诱发马氏体的步骤; 以及在马氏体/奥氏体反转变结束温度的温度范围内加热的工序。 亚稳态是Ni（7-11重量％），Cr（8-2重量％），Mn（2-10重量％），剩余的Fe和其他杂质。