Girth welding development for X120 linepipe

被引：0

作者：

Fairchild, DP ^{[1
]}

Macia, M ^{[1
]}

Bangaru, NV ^{[1
]}

Koo, JY ^{[1
]}

机构：

[1] ExxonMobil Upstream Res Co, Houston, TX USA

来源：

PROCEEDINGS OF THE THIRTEENTH (2003) INTERNATIONAL OFFSHORE AND POLAR ENGINEERING CONFERENCE, VOL 4 | 2003年

关键词：

welding; pipelines; high-strength; toughness; microstructure; martensite; acicular ferrite;

D O I：

暂无

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

This paper discusses the development of a girth welding technique for X120 linepipe. The solid-wire, pulsed gas metal arc welding (PGMAW) process with Ar-based shielding gas was selected for its process control, and low oxygen and hydrogen potentials. The weld metal microstructure was designed using fundamental metallurgical principles and verified through the evaluation of about twenty experimental wires and several commercial-scale heats of wire. Weld metal chemistry and shielding gas composition were optimized. The developed microstructure is termed acicular ferrite interspersed in martensite (AFIM). Transmission electron microscopy was the primary too] used for microstructural analysis and weld metal inclusion design.

引用

页码：26 / 35

页数：10

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