摘要
本文运用物理冶金原理进行非调质钢的化学成份设计,研制了σb>800MPa,αk>90J/cm^2的高强度高韧性中碳微合金非调质钢。利用光学显微镜、电子显微镜、图象分析仪、X射线衍射仪、X射线小角散射仪、相变仪等仪器重点研究了热加工条件和组织性能间的关系,测定了组织显微参数,研究了热加工过程各个阶段中M(C,N)相粒子的析出行为、状态、分布及其对钢的晶粒细化,沉淀强化等影响,并探讨了非调质钢的强韧化机制。
This paper presents the application of physical metallurgical principles to design chemical compositions of non-quenched and non-tempered steel for developing the high strength (σ_b>300MPa) and high toughness (σ_k>90/cm) mieroalloyed medium carbon steel. By means of the optical microscope, transmission electron microscope, image analyzer, X-ray diffractometer and etc., relationships between hot-working conditions and microstructural property have been investigated and mierostructural parameters have been measured. The precipitation behavior, state and distribution of M(C, N) phase particles in various stages of hot-working, and the effects of precipitates on the grain refinement and precipitation strengthening of the steel have been investigated. Strengthening and toughening mechanisms of non-quenched and non-tempered steel are also studied.
出处
《上海金属》
CAS
1990年第6期3-11,共9页
Shanghai Metals
