Fracture toughness assessment at different temperatures and regions within a friction stirred API 5L X80 steel welded plates

被引：31
|
作者：
Avila, Julian A. [1 ,4 ]
Ruchert, Cassius O. F. T. [2 ]
Mei, Paulo Roberto [1 ]
Marinho, Ricardo R. [3 ]
Paes, Marcelo T. P. [3 ]
Ramirez, Antonio J. [1 ,4 ,5 ]
机构：
[1] Univ Estadual Campinas, Sch Mech Engn, BR-13083860 Campinas, SP, Brazil
[2] Univ Sao Paulo, Engn Sch Sao Carlos, BR-13566590 Sao Carlos, SP, Brazil
[3] CENPES, Petrobras, BR-21941915 Rio De Janeiro, RJ, Brazil
[4] Brazilian Nanotechnol Natl Lab, BR-13083970 Campinas, SP, Brazil
[5] Ohio State Univ, Columbus, OH 43221 USA
来源：
ENGINEERING FRACTURE MECHANICS | 2015年 / 147卷
关键词：
API-X80; steel; Fracture toughness; Friction stir welding; Pipeline steel; HEAT-AFFECTED ZONE; DELAMINATION;
D O I：
10.1016/j.engfracmech.2015.08.006
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Friction stir welding (FSW) is a promising candidate for use in pipeline steels because it offers high productivity and sound welded joints. This study presents a fracture toughness assessment of FSW-welded two-pass butt joints, different regions within the joints and tests temperatures (25 degrees C, -15 degrees C, -20 degrees C, -35 degrees C, -40 degrees C) were used. Base plates of API-X80 steel 12 mm thick were FSW-welded using two different pass sequences, coincident and alternate directions. The results presented consistently high toughness values down to -20 degrees C for all the assessed notches, which indicates that FSW may be suitable for general pipelines steels applications in that range of temperatures. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：176 / 186
页数：11
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