MECHANICAL PERFORMANCE VARIATION WITH TUBE MATERIAL'S QUALITY AND COMPOSITION OF THE REHEATERS MADE FROM T91 STEEL

ZHANG Dao-gang1; JI Yan-zhao2; KE Hao11.Hebei Provincial Electric Power Research Institute

doi:10.19666/j.rlfd.2008.06.019

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MECHANICAL PERFORMANCE VARIATION WITH TUBE MATERIAL'S QUALITY AND COMPOSITION OF THE REHEATERS MADE FROM T91 STEEL

更新时间：2025-09-28

- MECHANICAL PERFORMANCE VARIATION WITH TUBE MATERIAL'S QUALITY AND COMPOSITION OF THE REHEATERS MADE FROM T91 STEEL
- Thermal Power Generation Issue 6, Pages: 69-72(2008)
- 作者机构：
  
  1. 河北省电力研究院
  2. 西柏坡发电有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2008.06.019
  CLC： TK223.3
- Published：2008
- 稿件说明：
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ZHANG Dao-gang1, JI Yan-zhao2, KE Hao11.Hebei Provincial Electric Power Research Institute. MECHANICAL PERFORMANCE VARIATION WITH TUBE MATERIAL'S QUALITY AND COMPOSITION OF THE REHEATERS MADE FROM T91 STEEL[J]. Thermal power generation, 2008, (6): 69-72.
DOI：

ZHANG Dao-gang1, JI Yan-zhao2, KE Hao11.Hebei Provincial Electric Power Research Institute. MECHANICAL PERFORMANCE VARIATION WITH TUBE MATERIAL'S QUALITY AND COMPOSITION OF THE REHEATERS MADE FROM T91 STEEL[J]. Thermal power generation, 2008, (6): 69-72. DOI： 10.19666/j.rlfd.2008.06.019.

摘要

对运行5.5万h及运行1000 h后的T91钢再热器爆管后的材料组织力学性能进行了研究。研究结果表明:由于管材运行老化

形成的碳化物网越来越严重

材料的抗拉强度、冲击韧性下降

针状特征减弱明显

铁素体块增多。新材料与运行后管子材料的拉伸曲线差异明显。

Abstract

For reheaters made from T91 steel put into operation of 55 000 h and 1 000 h

the mechanical performance of material's quality after tube-burst had been studied.Results of study show that the formed carbide grid was increasingly serious due to ageing of tube material in operation

the tensile strength and toughness of material had decreased

the spicular characteristics being obviously weakened

and the ferritic blocks being increased.The difference between tensile curve of new tube and that of tube material after operation was remarkable.

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