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Keywords pipeline steel;DWTT;delamination crack; 管线钢;落锤撕裂试验;分层裂纹;
Keywords pipeline steel;HTP;property;microstructure; 管线钢;HTP工艺;性能;显微组织;
Keywords pipeline steel DWTT fracture separation shear area; 管线钢;DWTT;断口分离;剪切面积;
Keywords pipeline steel;pre-straining;fatigue;crack initiation; 管线钢;预应变;疲劳;裂纹形成;
Keywords pipeline steel;DWTT;abnormal fracture;brittleness; 管线钢;DWTT;异常断口;脆性;
Keywords pipeline steel DWTT energy measuring method; 管线钢;落锤撕裂试验;能量测试;方法;
Keywords pipeline steel;DWTT;dynamic fracture;abnormal fracture; 管线钢;落锤撕裂试验;动态断裂;异常断口;
Keywords pipeline steel;cleanliness steel;secondary refining;HIC; 管线钢;洁净钢;炉外精炼;HIC;
Keywords pipeline steel;DWTT;testing;energy determination; 管线钢;落锤撕裂;试验;能量测定;
Keywords pipeline steel carbon content Ceq weldability relation analysis; 管线钢;碳含量;碳当量;焊接性;关系;分析;
Keywords pipeline steel enlongation failure CTOA double samples method; 管线钢;延性断裂;裂尖张开角度;两试样法;
Keywords pipeline steel;test;MA island;yield ratio;yield strength;DWTT; 管线钢;试验;MA岛;屈强比;屈服强度;落锤;
Keywords pipeline steel;bauschinger effect;pre-strain;yield strength; 管线钢;包申格效应;预应变;屈服强度;
Keywords pipeline steel;acicular ferrite;sulfide stress-corrosion cracking（SSCC）; 管线钢;针状铁素体;硫化物应力腐蚀开裂;
Keywords pipeline steel X70 pipeline steel X80 structure spicular ferrite properties transmitting pipeline development; X70级管线钢;X80级管线钢;组织;针状铁素体;性能;输送管道;发展;
Keywords pipeline steel;strengthening with fine grains;DWTT test;toughness-brittleness transformation temperature; 管线钢;细晶强化;DWTT试验;韧脆转变温度;
Keywords pipeline steel;static recrystallization;dynamic CCT curve;controlled roiling and controlled cooling; 关键词管线钢;静态再结晶;动态CCT曲线;控轧控冷;
Keywords pipeline steel;DWTT abnormal fracture;pressed notch;evaluation methods; 管线钢;DWTT异常断口;压制缺口;评判方法;
Keywords Pipeline Steel Hydrogen Induced Crack （HIC） Characteristic Measurement; 管线钢管;氢致裂纹;特点;措施;
Toughness is one of important properties for pipeline steel. 韧性是管线钢最重要的性能之一。