摘要
以高碳低锰碳素热轧钢轨为热处理原料轨，采用双频电感应加热、压缩空气欠速淬火热处理技术研制的PD275kg／m热处理钢轨，硬化层深度≥15mm、组织为细珠光体；力学性能：σ0.2815～980MPa、σb1185～1340MPa、δ510％～15％，常温冲击韧性aK14～33J／cm2，断裂韧性KIc平均值45.5MPa·m1/2。具有强度高，塑韧性好的综合性能。使用性能优良，寿命比同曲线的U71Mn热轧轨延长一倍以上。
The high carbon low manganese hot rolled steel rail is subject to heat treatment,using double frequency induction heating and slack quenching with compressed air. The PD275kg/m heat treated rail was developed which is characterized by fine pearlitic structure;a depth of hardened layer≥ 15mm and mechanical property:σ0.22815～980MPa, σb1185～1340MPa, δ510%～15%, room temperature impact toughness aK 14～33J/cm2, average fracture toughness KIc 45. 5MPa·m1/2. The newly developed rail has a fair combined property of high strength,good ductility and toughness,and excellent service performance with its service life over twice that of the U71Mn hot rolled rail.
出处
《钢铁钒钛》
CAS
北大核心
1998年第3期26-29,40,共5页
Iron Steel Vanadium Titanium
