国产Super304 H钢高温持久后微观组织与性能

doi:10.11930.2015.9.49

中国电力 ›› 2015, Vol. 48 ›› Issue (9): 49-55.DOI: 10.11930.2015.9.49

国产Super304 H钢高温持久后微观组织与性能

田晓，秦承鹏，徐慧，李益民，杨百勋，肖国华

西安热工研究院有限公司，陕西西安 710032

收稿日期:2015-04-15 出版日期:2015-09-25 发布日期:2015-11-25
作者简介:田晓（１９８５—），女，河南焦作人，工程师，工学硕士，主要从事电站新型耐热钢组织性能研究、材料失效分析与评估工作。E-mail: tianxiao@tpri.com.cn

Properties and Microstructure Evolution of Domestic Super304H Steel during High Temperature Creep Rupture Testing

TIAN Xiao, QIN Chengpeng, XU Hui, LI Yimin, YANG Baixun, XIAO Guohua

Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710032, China

Received:2015-04-15 Online:2015-09-25 Published:2015-11-25

摘要/Abstract

摘要： 为促进国产Super304H钢的推广应用，采用硬度测试、金相组织分析、透射电镜（ＴＥＭ）分析、扫描电镜（ＳＥＭ）和能谱（ＥＤＸ）分析等对国产Super304H钢在600、650、700 ℃高温持久后的微观组织及性能进行了试验研究。结果表明：在高温持久过程中，国产Super304H钢基体组织稳定，晶粒无明显变化，其硬度的升高主要与第二相的析出有关，析出相主要为ε-Cu、二次Nb（C，N）和M23C6，细小弥散的ε-Cu、二次Nb（C，N）使Super304H具有较高的强度。Super304H钢在高温持久过程中的组织老化主要表现为M23C6在晶界聚集、沿晶界呈链状分布，以及颗粒尺寸粗化。国产Super304H钢持久10 000 h后，其强度、硬度仍处于较高水平，组织状态良好。

关键词: 超临界机组, 国产Super304H, 高温持久, 析出相, 硬度, 组织老化

Abstract: In order to promote the popularization and application of domestically-made Super304H steel, the creep rupture specimens of the steel are analyzed by adopting Vickers hardness measurement, metallographic structure observation, transmission electron microscope, scanning electron microscopy and energy spectrum analysis at the temperatures of 600 ℃, 650 ℃ and 700 ℃ respectively. The results show that the matrix structure of the steel is stable during high temperature creep without grain growth. Its hardness increase is related to the second phase precipitation in high temperature creep. ε-Cu, secondary Nb(C, N) and M23C6 are the main precipitated phases in the steel during high temperature creep, in which the tiny ε-Cu and secondary Nb(C, N) keep the steel at high strength levels. The microstructure aging characteristics of the steel show M23C6 gathering like chain on the grain boundary and size coarsening. After 10 000-h high temperature creep, the strengths and hardness of domestically-made Super304H steel are all maintained at high levels and with good microstructure.

Key words: USC unit, domestically-made Super304H steel, high temperature creep, precipitated phase, hardness, microstructure aging

中图分类号:

TG142
TK223

田晓，秦承鹏，徐慧，李益民，杨百勋，肖国华. 国产Super304 H钢高温持久后微观组织与性能[J]. 中国电力, 2015, 48(9): 49-55.

TIAN Xiao, QIN Chengpeng, XU Hui, LI Yimin, YANG Baixun, XIAO Guohua. Properties and Microstructure Evolution of Domestic Super304H Steel during High Temperature Creep Rupture Testing[J]. journal1, 2015, 48(9): 49-55.

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https://www.electricpower.com.cn/CN/Y2015/V48/I9/49

参考文献

[1] 彭芳芳，朱国良，宋建新. 超超临界机组用Super304H钢管国产化关键制造工艺的分析[J]. 动力工程，２００８，２８（５）：８０３－８０６．
PENG Fangfang, ZHU Guoliang, SONG Jianxin. Aanlysis of key manufacturing process in domestic producing for super304H steel tube applied in ultra-supercritical unit[J]. Journal of Power Engineering, 2008, 28(5): 803-806.
[2] 赵钦新，朱丽慧.超临界锅炉耐热钢研究[M]. 北京：机械出版社，2010.
[3] 田晓. 国产Supre304H高温持久过程老化损伤分析[R]. 西安：西安热工研究院有限公司，2014.
[4] 马红，郑坊平，贺锡鹏，等. 18-8型奥氏体不锈钢锅炉管服役特性研究（四）[J]. 热力发电，2012，41（4）：51-55.
MA Hong, ZHENG Fangping, HE Xipeng, et al. Study on servicing properties of boiler tubes made from 18-8 type austenitic stainless steel (Ⅳ)[J]. Thermal Power Generation, 2012, 41(4): 51-55.
[5] TANAKA H, MURATA M, ABE F, et al. Microstructural eeolution and change in hardness in type 304H stainless steel during long-term creep[J]. Materials Science and Engineering, 2001, A319-321: 788-791.
[6] 马红，史志刚，贺锡鹏，等. 18-8型奥氏体不锈钢锅炉管服役特性研究（三）[J]. 热力发电，2012，41（3）：42-47.
MA Hong, SHI Zhigang, HE Xipeng, et al. Study on servicing properties of boiler tubes made from 18-8 type austenitic stainless steel (Ⅲ)[J]. Thermal Power Generation, 2012, 41(3): 42-47.
Properties and Microstructure Evolution of Domestic Super304H Steel during High Temperature Creep Rupture Testing
TIAN Xiao, QIN Chengpeng, XU Hui, LI Yimin, YANG Baixun, XIAO Guohua
（Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710032, China）
Abstract: In order to promote the popularization and application of domestically-made Super304H steel, the creep rupture specimens of the steel are analyzed by adopting Vickers hardness measurement, metallographic structure observation, transmission electron microscope, scanning electron microscopy and energy spectrum analysis at the temperatures of 600 ℃, 650 ℃ and 700 ℃ respectively. The results show that the matrix structure of the steel is stable during high temperature creep without grain growth. Its hardness increase is related to the second phase precipitation in high temperature creep. ε-Cu, secondary Nb(C, N) and M23C6 are the main precipitated phases in the steel during high temperature creep, in which the tiny ε-Cu and secondary Nb(C, N) keep the steel at high strength levels. The microstructure aging characteristics of the steel show M23C6 gathering like chain on the grain boundary and size coarsening. After 10 000-h high temperature creep, the strengths and hardness of domestically-made Super304H steel are all maintained at high levels and with good microstructure.
Keywords: USC unit; domestically-made Super304H steel; high temperature creep; precipitated phase; hardness; microstructure aging

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国产Super304 H钢高温持久后微观组织与性能

Properties and Microstructure Evolution of Domestic Super304H Steel during High Temperature Creep Rupture Testing

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国产Super304 H钢高温持久后微观组织与性能

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