摘要
研究了高温钢板转移时间与初始成形温度之间的关系,分析了初始成形温度对超高强钢板热冲压件力学性能的影响规律。结果表明,随着板料转移时间的增加,初始成形温度降低,两者之间为线性关系;在一定范围内随着初始成形温度升高,热冲压件的力学性能增加,当初始成形温度高于800℃时,热成形件的力学性能基本不变;形变促进奥氏体晶粒细化,获得相对细小的马氏体组织,热成形件力学性能优于非变形钢板。
Relationship between initial deformation temperature and transfer time of high temperature steel plate was investigated,and effect of initial deformation temperature on mechanical properties of ultra-high strength steel hot stamping parts was analyzed.The results show that with increasing of transfer time of high temperature steel,initial deformation temperature decreases,and the relationship between the two factors is linear.With initial deformation temperature increasing,mechanical properties of hot stamping parts increase within a certain range,and when initial deformation temperature higher than 800 ℃,mechanical properties of hot stamping parts change little.At the same process condition,the mechanical properties of hot stamping parts are relatively better than unformed blank because of austenite grain refinement which caused by deformation.
出处
《金属热处理》
CAS
CSCD
北大核心
2011年第12期66-69,共4页
Heat Treatment of Metals
基金
国家04科技重大专项(2009ZX04014-072
2011ZX04016-051)
关键词
初始成形温度
超高强钢
力学性能
initial deformation temperature
ultra-high strength steel
mechanical property
