HR3C钢运行过热器管的脆化与晶界M23C6相参量演化的关系*

doi:10.11900/0412.1961.2015.00077

金属学报

2015, Vol. 51

Issue (11): 1325-1332 DOI: 10.11900/0412.1961.2015.00077

本期目录 | 过刊浏览

HR3C钢运行过热器管的脆化与晶界M₂₃C₆相参量演化的关系^*

彭志方¹(

),任文¹,杨超²,陈方玉³,刘鸿国⁴,彭芳芳⁵,梅青松¹

2 江苏方天电力技术有限公司, 南京 211102
3 武汉钢铁(集团)公司研究院检测所, 武汉 430080
4 神华(福建)能源有限责任公司, 福州 350004
5 东方电气集团东方锅炉股份有限公司, 自贡 643000

RELATIONSHIP BETWEEN THE EVOLUTION OF PHASE PARAMETERS OF GRAIN BOUNDARY M₂₃C₆ AND EMBRITTLEMENT OF HR3C SUPER-HEATER TUBES IN SERVICE

Zhifang PENG¹(

),Wen REN¹,Chao YANG²,Fangyu CHEN³,Hongguo LIU⁴,Fangfang PENG⁵,Qingsong MEI¹

1 School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072
2 Jiangsu Frontier Electric Technology Co. Ltd., Nanjing 211102
3 Research Institute of Wuhan Iron and Steel (Group) Corp., Wuhan 430080
4 Shenhua (Fujian) Energy Co. Ltd., Fuzhou 350004
5 Dongfang Boiler Group Co. Ltd., Zigong 643000

引用本文:

彭志方,任文,杨超,陈方玉,刘鸿国,彭芳芳,梅青松. HR3C钢运行过热器管的脆化与晶界M₂₃C₆相参量演化的关系^*[J]. 金属学报, 2015, 51(11): 1325-1332.
Zhifang PENG, Wen REN, Chao YANG, Fangyu CHEN, Hongguo LIU, Fangfang PENG, Qingsong MEI. RELATIONSHIP BETWEEN THE EVOLUTION OF PHASE PARAMETERS OF GRAIN BOUNDARY M₂₃C₆ AND EMBRITTLEMENT OF HR3C SUPER-HEATER TUBES IN SERVICE[J]. Acta Metall Sin, 2015, 51(11): 1325-1332.

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摘要:

研究了HR3C钢不同运行态过热器管样晶界碳化物M₂₃C₆相参量(面积分数 ? M 23 C 6 和等效宽度W)的变化与脆化的关系. 利用ASTM E112规范奥氏体钢晶粒度评级卡片测算出各级别晶粒度(G_L)对应的二维图像晶界总周长(L_gb), 并拟合出两者的关系L_gb(G_L); 利用各管样的扫描电镜二次电子(SEM-SE)像, 得到了对应的 ? M 23 C 6 及W, 从而建立了W与G_L和 ? M 23 C 6 的关系(W(G_L, ? M 23 C 6 )); 再结合Charpy冲击实验, 获得了冲击值(a_KV)与W的关系(a_KV(W)); 此外, 利用纳米压痕仪测定了晶界的弹性模量(E_r). 结果表明, 所有管样冲击断口均呈沿晶断裂形貌; 当 ? M 23 C 6 一定时, G_L越小, W越大, 其E_r也越大, 对应的a_KV越小, 即晶界脆化倾向越大. 揭示了晶界M₂₃C₆片等效宽度的增大(粗化)导致脆化的实质.

关键词 ： HR3C钢, 脆化, M₂₃C₆, 等效宽度, Charpy冲击值

Abstract：

The relationship of the evolution of the phase parameters (area fraction ? M 23 C 6 and equivalent width W ) of grain boundary M₂₃C₆ plates with the embrittlement of HR3C super-heater tube samples in service was studied. Based on the ASTM E112 standard charts, the total length of two dimensional austenite grain boundaries (L_gb) corresponding to each grain size number (G_L) was determined in the observed area of the metallographic images and expressed as L_gb (G_L). Making use of the SEM-SE images of the samples, the ? M 23 C 6 and W were determined. The relationships of W with G_Land ? M 23 C 6 were established as W(G_L, ? M 23 C 6 ). Combined with the result from a Charpy impact test, the function of the impact value (a_KV) as the W was obtained. In addition, the grain boundary elastic modulus (E_r) was measured by a nano-hardness test. The result shows that intergranular fracture occurred on all the room temperature impact test specimens taken from the super-heater tubes exposed under the operating conditions. The W was increased with the decrease of G_L and the increase of E_r at a constant ? M 23 C 6 , causing a corresponding decrease of a_KV, and hence promoting the embrittlement of the HR3C super-heater tubes. The related mechanism for the intergranular fracture caused by the increase of the equivalent width W of grain boundary carbides (carbide coarsening) can be explained through the application of the proposed method.

Key words： HR3C steel embrittlement M₂₃C₆ equivalent width Charpy impact value

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表1 HR3C钢过热器管的运行条件及其尺寸

表2 HR3C钢过热器管样的化学成分

图1 HR3C钢过热器管样的冲击断口SEM-SE像

图2 HR3C钢过热器管样的OM像

图3 HR3C钢过热器管样显微组织的SEM-SE像

图4 奥氏体钢晶界总周长(Lgb)与奥氏体晶粒度(GL)的关系

图5 不同方法确定的HR3C过热器管样晶粒度级别GM与GL的对比

图6 晶界M23C6片的等效宽度(W)随其面积分数(? M 23 C 6 )和晶粒度(GL)的变化

图7 HR3C管样的冲击值(aKV)与晶界M23C6片的等效宽度(W)

[1]	Yang F,Zhang Y L,Ren Y N,Li W M. New Heat-Resistant Steels Welding. Beijing: China Electric Power Press, 2006: 143 (杨富,章应霖,任永宁,李为民. 新型耐热钢焊接. 北京: 中国电力出版社, 2006: 143)
[2]	Iseda A, Okada H, Semba H, Igarashi M. Energy Mater, 2007; 2(4): 199
[3]	Fang Y Y, Zhao J, Li X N. Acta Metall Sin, 2010; 46: 844 (方园园, 赵杰, 李晓娜. 金属学报, 2010; 46: 844)
[4]	Komai N,Igarashi M,Minami Y,Mimura H,Masuyama F,Prager M,Boyles P R. In: American Society of Mechanical Engineers ed.,2007 Proc ASME Pressure Vessels and Piping Conference-8th Int Conf on Creep and Fatigue at Elevated Temperatures-CREEP, New York: ASME, 2007: 203
[5]	Hu P. Electr Power Constr, 2005; 26(6): 26 (胡平. 电力建设, 2005; 26(6): 26)
[6]	Jiang Z S, Dong W G, Mao G G. Electr Power Constr, 2007; 28(8): 7 (江哲生, 董卫国, 毛国光. 电力建设, 2007; 28(8): 7)
[7]	Sun Y Z. Electr Power Constr, 2003; 24(9): 11 (孙叶柱. 电力建设, 2003; 24(9): 11)
[8]	Yin Z, Cai H, Liu H G. Proc Chin Soc Elec Eng, 2011; 31: 103 (殷尊, 蔡晖, 刘鸿国. 中国电机工程学报, 2011; 31: 103 )
[9]	Du B S, Wei Y Z, Zhang Z W, Li X M, Liu R. Trans Mater Heat Treatment, 2014; 35(12): 84 (杜宝帅, 魏玉忠, 张忠文, 李新梅, 刘睿. 材料热处理学报, 2014; 35(12): 84 )
[10]	Okada H,Igarashi M,Yamamoto S,Miyahara O,Iseda A,Komai N,Masuyama F. In: American Society of Mechanical Engineers ed., 2007 Proc ASME Pressure Vessels and Piping Conference-8th Int Conf on Creep and Fatigue at Elevated Temperatures-CREEP, New York: ASME, 2007: 181
[11]	Li T J, Liu F G, Fan C X, Yao B Y. Hot Working Technol, 2010; 39(14): 43 (李太江, 刘福广, 范长信, 姚兵印. 热加工工艺, 2010; 39(14): 43 )
[12]	Bai X, Pan J, Chen G, Liu J, Wang J, Zhang T, Tang W. Mater Sci Technol, 2014; 30(2): 205
[13]	Zhen Z J. Boiler Technol, 2011; 42(4): 46 (郑子杰. 锅炉技术, 2011; 42(4): 46 )
[14]	Gao J Q, Hong J, Zhou Y D, Toda Y, Wang Q J, Liu J L. Metall Anal (Suppl.: Phys), 2012; 32: 172 (高加强, 洪杰, 周冶东, 户田佳明, 王起江, 刘俊亮. 冶金分析(增刊: 物理分册), 2012; 32: 172)
[15]	Peng B C, Zhang H X, Hong J, Gao J Q, Wang Q J, Zhang H Q. Mater Sci Eng, 2010; A527:1957
[16]	Peng Z F, Peng F F, Chen F Y. In: Gandy D, Shingledecker J eds., Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference (EPRI 2013), Waikoloa, Hawaii, USA: ASM International, 2013: 1151
[17]	Shen Q, Liu H G, Tang L Y. Electr Power Constr, 2009; 30(9): 62 (沈琦, 刘鸿国, 唐丽英. 电力建设, 2009; 30(9): 62)

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