Carbide and hardness development in the heat-affected zone of tempered and postweld heat-treated 2.25Cr-1Mo steel weldments

被引：0

作者：

B. E. Peddle

C. A. Pickles

机构：

[1] Queen’s University,Department of Materials and Metallurgical Engineering

来源：

Journal of Materials Engineering and Performance | 2000年 / 9卷

关键词：

2.25 Cr-1.0Mo steel; heat-affected zone; postweld heat treatment; microstructure; welding;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The temper-bead and the conventional weaving, multipass welding procedures have been developed to eliminate postweld heat treatment (PWHT) of creep resistant 2.25Cr-1Mo steel. Both procedures aim to refine and temper the heat-affected zone (HAZ). The temper-bead procedure resulted in a martensitic HAZ and a homogeneous fine-grain size. Hardness was not decreased by high heat input weaving fillout passes. Upper bainite developed in the conventional weaving HAZ, although grain refinement was inhomogeneous and some martensite was present. However, the conventional weaving procedure appears to produce a lower as-welded hardness than the temper-bead procedure.

引用

页码：477 / 488

页数：11

共 50 条

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