학술논문
1000 MPa 级高强钢显微组织与析出相分析 / Analysis on Microstructure and Precipitation Phase of 1 000 MPa Grade High Strength Steel
Document Type
Academic Journal
Author
Source
宽厚板 / Wide and Heavy Plate. (3):6-9
Subject
Language
Chinese
ISSN
1009-7864
Abstract
利用金相显微镜、扫描电子显微镜及透射电子显微镜等分析手段，对1000 MPa 级高强钢的显微组织与析出相进行了研究。结果表明，试验钢的显微组织为板条状贝氏体和板条状马氏体，并存在少量残余奥氏体。大量析出相分布在基体上，平均尺寸30~60 nm，组织强化、析出强化、位错强化是高强钢主要的强化方式。
The article studies the microstructure and precipitation phase of 1 000 MPa grade high strength steel by using optical metallographic microscope(OM),scanning electron microscope(SEM)and transmission electron mi-croscope(TEM). The results indicate that the microstructure consists of lath bainite,lath martensite and a little resid-ual austensite. A mass of precipitates distribute in bainite matrix with average size from 30 to 60 nm. Microstructure strengthening,precipitation strengthening and dislocation strengthening are the main strengthening mechanisms.
The article studies the microstructure and precipitation phase of 1 000 MPa grade high strength steel by using optical metallographic microscope(OM),scanning electron microscope(SEM)and transmission electron mi-croscope(TEM). The results indicate that the microstructure consists of lath bainite,lath martensite and a little resid-ual austensite. A mass of precipitates distribute in bainite matrix with average size from 30 to 60 nm. Microstructure strengthening,precipitation strengthening and dislocation strengthening are the main strengthening mechanisms.