摘要
在不同温度下测试了X70级管线钢的动态断裂韧度。研究表明:加载速率对动态断裂韧度的影响与温度对其的影响同样重要;在恒温下,增大加载速率可以诱发韧脆断裂转变;当温度由298 K向193 K逐渐降低,或加载速率从0.01 mm/s向1 000 mm/s增大时,均将导致材料的韧脆断裂转变。
The dynamic fracture toughness of X70 pipeline steel were measured at different temperatures.It was found that loading rate was important as temperature to dynamic fracture toughness.At constant temperature, increasing loading rate can induce the fracture transition from ductile to brittle.It causes fracture transition when decreasing temperature from 298 K to 193 K and increasing loading rate from 0.01 mm/s to 1 000 mm/s.
出处
《理化检验（物理分册）》
CAS
2010年第1期1-3,17,共4页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
基金
2007宁夏高校科研资助项目(2007Y038)
关键词
X70级管线钢
断裂韧度
温度
加载速率
韧脆转变
pipeline steel X70
fracture toughness
temperature
loading rate
toughness-brittleness transition
