汽轮机高温叶片用马氏体耐热钢服役氧化行为研究

材料导报

2021, Vol. 35

Issue (z2): 395-398

金属与金属基复合材料

汽轮机高温叶片用马氏体耐热钢服役氧化行为研究

李金祺^1,2, 陈艺文^1,2, 裴玉冰^1,2, 王天剑^1,2, 聂丽萍^1,2

1 长寿命高温材料国家重点实验室,德阳 618000
2 东方电气集团东方汽轮机有限公司,德阳 618000

Oxidation Behavior of Martensiticheat Resistant Steel for Steam Turbine High Temperature Blades During Operation

LI Jinqi^1,2, CHENG Yiwen^1,2, PEI Yubing^1,2, WANG Tianjian^1,2, NIE Liping^1,2

1 State Key Laboratory of Laboratory of Long-life High Temperature Materials, Deyang 618000, China
2 Dongfang Electric Corporation Dongfang Turbinr Co.,Ltd., Deyang 618000, China

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摘要对某电厂服役一年的马氏体耐热钢叶片表面的氧化情况进行研究。结果表明,在530~580 ℃的服役温度下,1-4级叶片表面内层氧化物均为铁铬尖晶石,外层为富铁氧化物,铁铬尖晶石中的Cr元素分布不均匀,蒸汽流速导致不同级叶片外层富铁氧化物在成分和结构上存在差异;金属离子向外扩散是氧化速率的限速步骤,同时也是导致氧化层中产生孔洞的主要原因,因为温度升高可促进金属离子向外扩散。

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关键词: 钢水蒸气氧化

Abstract: The oxidation was studied of martensiteheat resistant steel blade surface in a power plant. The results show that the inner oxide is iron chromium spinel and the outer layer is iron oxide on the surface of stage 1—4 blades at the service temperature of 530—580 ℃. The Cr element in iron chromium spinel is unevenly distributed. The steam flow rate leads to the differences in the composition and structure of iron rich oxides in the outer layer of different stages of blades; the outward diffusion of metal ions is the speed limiting step of oxidation rate, and it is also the main reason for the formation of holes in the oxide layer. Because the increase of temperature can promote the outward diffusion of metal ions.

Key words: steel steam oxidation

发布日期: 2021-12-09

ZTFLH:

TG172.5

基金资助: 德阳市开放式校市合作技术研发计划项目(2018CKJ001)

通讯作者: peiyubing@dongfang.com

作者简介: 李金祺,2019年6月毕业于兰州理工大学,获得工程硕士学位,现就职于东方电气集团东方汽轮机有限公司,助理工程师,主要从事材料分析检验工作。
裴玉冰,毕业于清华大学,获得工程硕士学位,现就职于东方电气集团东方汽轮机有限公司,高级工程师,主要从事材料分析检验工作。

引用本文:

李金祺, 陈艺文, 裴玉冰, 王天剑, 聂丽萍. 汽轮机高温叶片用马氏体耐热钢服役氧化行为研究[J]. 材料导报, 2021, 35(z2): 395-398.
LI Jinqi, CHENG Yiwen, PEI Yubing, WANG Tianjian, NIE Liping. Oxidation Behavior of Martensiticheat Resistant Steel for Steam Turbine High Temperature Blades During Operation. Materials Reports, 2021, 35(z2): 395-398.

链接本文:

http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2021/V35/Iz2/395

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