Experimental Study on the Fracture Toughness of Welded Joints of API X90 High-grade Pipeline Steels Using Single-Edge-Notched Tension Specimens

被引：3

作者：

Kong, Lingzhen ^{[1
]}

Zhou, Xiayi ^{[2
]}

Chen, Liqiong ^{[1
]}

Huang, Kun ^{[1
]}

Chen, Jie ^{[1
]}

机构：

[1] Southwest Petr Univ, Sch Oil & Nat Gas Engn, Chengdu 610500, Sichuan, Peoples R China

[2] Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610500, Sichuan, Peoples R China

来源：

ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING | 2019年 / 44卷 / 02期

基金：

国家重点研发计划;

关键词：

X90; High-grade pipeline; SENT; Welded joint; Fracture toughness; TEARING RESISTANCE; R CURVE;

D O I：

10.1007/s13369-018-3396-7

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The fracture toughness and R-curves of welded joints of API X90 pipeline steels were experimentally studied. Single-edge- notched tension (SENT) specimens and a normalization method were adopted. Joints welded by using three technologies (A, B, and C) were investigated. The results show that the SENT specimen could be used to test the fracture toughness and R-curves of the welded joint; the welded joint of welding method B presented the poorest fracture toughness; and the R-curves and fracture toughness of the heat-affected zone were seriously affected by the weld zone and base metal. A new idea to test the fracture toughness and R-curves of the heat-affected zone was also proposed.

引用

页码：1033 / 1041

页数：9

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