控轧控冷对低碳C-Mn-Nb钢力学性能的影响

Influences of Controlled Rolling and Controlled Cooling on Mechanical Property of Low-carbon C-Mn-Nb Steel

通过改变终轧温度及轧后冷却速度 ,研究了终轧温度及轧后冷却速度对低碳 C-Mn-Nb钢的力学性能 (σs、σb、δ5)的影响。研究结果表明 :对控轧低碳 C-Mn-Nb钢的力学性能的影响主要决定于钢的碳当量 ;随轧后冷却速度的提高 ,σs、σb 提高 ,δ5降低。

Analyses the influences of finishing temperature and delivery cooling rate on mechanical properties ( σ s? σ b? δ 5) of low-carbon C-Mn-Nb steel by changing finishing temperature and delivery cooling rate. The results show that the mechanical properties of controlled rolled low-carbon C-Mn-Nb steel are mainly decided on the carbon equivalent; the σ s? σ b will increase while δ 5 will decrease with the increasing of the delivery cooling rate.