STUDY ON FAILURE MODE OF WELDED JOINTS FOR AUSTENITE STEEL WITH DISSIMILAR METALS ON HIGH-TEMPERATURE BOILER TUBES IN POWER PLANTS

doi:10.19666/j.rlfd.2003.08.009

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STUDY ON FAILURE MODE OF WELDED JOINTS FOR AUSTENITE STEEL WITH DISSIMILAR METALS ON HIGH-TEMPERATURE BOILER TUBES IN POWER PLANTS

Thermal Power Generation Issue 8, Pages: 27-31(2003)

更新时间：2025-09-28

- STUDY ON FAILURE MODE OF WELDED JOINTS FOR AUSTENITE STEEL WITH DISSIMILAR METALS ON HIGH-TEMPERATURE BOILER TUBES IN POWER PLANTS
- 作者机构：
  
  1. 国电热工研究院
  2. 武汉大学
  3. 华能淮阴发电有限公司
  4. 华能淮阴发电有限公司,陕西,西安,710032
  5. ,江苏,淮安,223001
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2003.08.009
  CLC： TG407
- Published：2003
- 稿件说明：
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STUDY ON FAILURE MODE OF WELDED JOINTS FOR AUSTENITE STEEL WITH DISSIMILAR METALS ON HIGH-TEMPERATURE BOILER TUBES IN POWER PLANTS[J]. Thermal Power Generation, 2003, (8): 27-31.
DOI：

STUDY ON FAILURE MODE OF WELDED JOINTS FOR AUSTENITE STEEL WITH DISSIMILAR METALS ON HIGH-TEMPERATURE BOILER TUBES IN POWER PLANTS[J]. Thermal Power Generation, 2003, (8): 27-31. DOI： 10.19666/j.rlfd.2003.08.009.

摘要

对国内应用较广的以 2 .2 5Cr 1Mo为代表的铁素体耐热钢与 30 4H、347H为代表的奥氏体不锈钢组成的异种钢接头长期使用后的老化特征及蠕变强度极限和持久强度极限进行了试验研究

从组织老化、性能变化、接头的结构特征、碳迁移及材料的热膨胀系数等方面综合分析了该类接头老化和失效的原因。

Abstract

The aging features

as well as creep rupture strength limit and persistent strength limit of welded joints for austenite steel （such as 304H and 347H stainless steel） with dissimilar metals （such 2.25Cr-1Mo ferrite heatresisting steel etc.） after long-term service have been tested and studied. The said heat-resisting steel has comparatively extensive utilization in our country. The causes leading to aging and failure of the said joints have been comprehensively analysed from several aspects

namely structure aging

peformance variation

features of joint’s configuration

carbon migration

and thermal expansion coefficient of materials etc.

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