LOW-CYCLE FATIGUE PROPERTY OF SA299 STEEL PLATES USED FOR BOILER DRUMS

doi:10.19666/j.rlfd.2001.06.006

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LOW-CYCLE FATIGUE PROPERTY OF SA299 STEEL PLATES USED FOR BOILER DRUMS

Thermal Power Generation Issue 6, Pages: 23-26(2001)

更新时间：2025-09-28

- LOW-CYCLE FATIGUE PROPERTY OF SA299 STEEL PLATES USED FOR BOILER DRUMS
- 作者机构：
  
  1. 国家电力公司热工研究院
  2. 石家庄热电厂
  3. 国营黄河机器制造厂,陕西,西安,710032
  4. 河北石家庄0500413.
  5. ,陕西,西安
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2001.06.006
  CLC： TK225
- Published：2001
- 稿件说明：
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LOW-CYCLE FATIGUE PROPERTY OF SA299 STEEL PLATES USED FOR BOILER DRUMS[J]. Thermal Power Generation, 2001, (6): 23-26.
DOI：

LOW-CYCLE FATIGUE PROPERTY OF SA299 STEEL PLATES USED FOR BOILER DRUMS[J]. Thermal Power Generation, 2001, (6): 23-26. DOI： 10.19666/j.rlfd.2001.06.006.

摘要

对碳含量有差异的SA2 99钢板母材及其焊缝材料的化学成分、显微组织、拉伸性能和冲击韧性进行试验

测定了碳含量不同的钢板的脆性形貌转变温度 (FATT)

重点对其低周疲劳特性进行了研究。结果表明 :对于碳含量有差异的钢板

其显微组织、晶粒度及夹杂物等级均属正常

焊缝中未发现淬硬组织 ;钢板的纵向和横向拉伸强度、塑性指标差异不大

冲击韧性满足有关标准要求 ;高含碳量钢板的FATT低于正常碳含量的钢板

其室温下的材料低周疲劳 (LCF)寿命相近

焊缝材料 370℃下的LCF寿命高于室温。

Abstract

Tests for chemical composition

micro-structure

tensile behavior and impact toughness of SA299 steel plate matrix and its weld-seam material possessing different carbon contents have been carried out

the fragility appearance transform temperature（FATT） of said steel plates has been measured

the investigation of low-cycle fatigue property having been emphasized. The obtained results indicate that the microstructure

grain-size and inclusion level of said steel plates were normal

hardened structure induced from quench had not been found; longitudinal and horizontal tensile strength as well as plasticity index of the said steel plates had no remarkable difference; their impact toughness could meet the requirements of related standards; the FATT of steel plates possessing higher carbon content was lower than that of steel plates possessing normal carbon content; their low-cycle fatigue lifes at room temperature were approximately the same

but the low-cycle fatigue life of weld-seam material at 370℃ was higher than that at room temperature.

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