Annealing-induced Hardening in a Nanostructured Low-carbon Steel Prepared by Using Dynamic Plastic Deformation  

作　　者：L.X.Sun N.R.Tao M.Kuntz J.Q.Yu K.Lu 

机构地区：[1]Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences [2]Corporate Sector Research and Advance Engineering Production Technology 1,Materials and Process Engineering Metals,Robert Bosch GmbH,P. O. Box 30 02 40,70442 Stuttgart,Germany [3]Research and Technology Center Asia Pacific,Bosch(China) Investment Ltd.

出　　处：《Journal of Materials Science & Technology》2014年第8期731-735,共5页材料科学技术（英文版）

基　　金：Financial supports from the National Basic Research Program of China(Grant No.2012CB932201);the National Natural Science Foundation of China(Grant No.51371172);Bosch (China) Investment Ltd.,the MOST of China(2010DFB54010);the CAS International Cooperation Project(GJHZ1033)

摘　　要：Lamellar nanostructures were induced in a plain martensitic low-carbon steel by using dynamic plastic deformation at room temperature.The nanostructured steel was hardened after annealing at 673 K for20 min,with a tensile strength increased from 1.2 GPa to 1.6 GPa.Both the remained nanostructures and annealing-induced precipitates in nano-scale play key roles in the hardening.Lamellar nanostructures were induced in a plain martensitic low-carbon steel by using dynamic plastic deformation at room temperature.The nanostructured steel was hardened after annealing at 673 K for20 min,with a tensile strength increased from 1.2 GPa to 1.6 GPa.Both the remained nanostructures and annealing-induced precipitates in nano-scale play key roles in the hardening.

关 键 词：NANOSTRUCTURE Annealing Precipitation hardening Low-carbon steel Dynamic plastic deformation 

分 类 号：TG142.31[一般工业技术—材料科学与工程]