L360管线钢的韧脆转变温度
Toughness-Brittleness Transition Temperature of L360 Pipeline Steel
摘 要
研究了L360管线钢在冲击试验过程中各阶段能量的变化与温度、断口形态的关系,并采用几种方法对L360管线钢的韧脆转变温度进行了评定。结果表明：几种方法测得L360钢的韧脆转变温度都低于-40℃。
吸收功
裂纹形成功
裂纹扩展功
韧脆转变温度
oscillograph impact
absorbed energy
crack formation energy
crack propagation energy
toughness-brittleness transition temperature
Abstract
The relationship between energy at every stage of the test,temperature and fracture morphology was investigated to evaluate the toughness-brittleness transition temperature of L360 pipeline steel by recording and analyzing impact absorbed energy,crack formation energy and crack propagation energy,and by observing fracture morphology through scan electron microscopy,as well as by calculating the fraction of ductility area on the fracture of the specimen. Several methods were used to analyze and compare the toughness-brittleness transition temperature of the L360 pipeline steel,and the result shows its toughness-brittleness transition temperature is below -40℃.
中图分类号 TB302.3
所属栏目 试验与研究
基金项目
收稿日期 2008/1/15
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备注尤大勇(1956-),男,高级工程师。
引用该论文: YOU Da-yong,ZHENG Hui-jun. Toughness-Brittleness Transition Temperature of L360 Pipeline Steel[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2009, 45(2): 82～85
尤大勇,郑会军. L360管线钢的韧脆转变温度[J]. 理化检验－物理分册, 2009, 45(2): 82～85
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参考文献
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【2】关国军,王 欣,穆振芬,等. 用线型缺口冲击试样测定NDT温度可行性的探讨[J]. 理化检验-物理分册,1995,31(6):38-39．
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