The Decomposition Characteristics and Carbide Growth Mechanism of T91 Heat-Resistant Steel After Long-Term Creep at 650 °C
文献类型：期刊论文
| 作者 | Zhang, Zhen1,2; Zhang, Bin3; Qu, Kejie1; Tu, Yekuan1; Xu, Zixuan1; Han, Yujun1,2; Zhang, Baosen1,2; Shen, Yong4; Hu, Zhengfei3 |
| 刊名 | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
 |
| 出版日期 | 2025-02-18 |
| 页码 | 13 |
| 关键词 | carbide creep damage decomposition martensite lath T91HRS |
| ISSN号 | 1059-9495 |
| DOI | 10.1007/s11665-025-10699-4 |
| 通讯作者 | Zhang, Zhen(zhangzhen@njit.edu.cn) ; Shen, Yong(yongshen@imr.ac.cn) ; Hu, Zhengfei(huzhengf@tongji.edu.cn) |
| 英文摘要 | To elucidate the cause of decomposition in martensite laths of T91 heat-resistant steel (T91 HRS) during long-term creep at 650 degrees C, the microstructure of the steel after creep at 650 degrees C lasting up to 12343 h was investigated. X-ray diffraction (XRD) results show that the crystal lattice constant of the matrix alpha Fe declines after long-term creep. The hardness and average geometrically necessary dislocation (GND) density first increases slightly at the initial stage of creep and then decreases. The formation of polygonized subgrain occurs after long-term creep as systematically verified by transmission electron microscopy (TEM) image and electron backscattered diffraction (EBSD) mapping analysis. TEM and energy-dispersive spectrum (EDS) analysis reveal that the rodlike M23C6 carbides containing more silicon elements exhibit accelerated coarsening behavior. The fraction of chromium increases, the fraction of iron decreases, and the fraction of molybdenum remains relatively stable in M23C6 carbides after long-term creep at 650 degrees C. Back-scatter electron (BSE) analysis shows that the coarsening rate of carbides varies at different locations due to the different diffusion rates of alloy elements at grain boundaries and lath boundaries. |
| 资助项目 | National Natural Science Foundation of China[51971163] ; Open Fund of Jiangsu Wind Power Engineering Technology Center[ZK22-03-02] ; Jiangsu Key Research and Development Program of China[BE2021020] ; Jiangsu Province Postgraduate Practice and Innovation Program Project[SJCX24_1298] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001424299100001 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China ; Open Fund of Jiangsu Wind Power Engineering Technology Center ; Jiangsu Key Research and Development Program of China ; Jiangsu Province Postgraduate Practice and Innovation Program Project |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhang, Zhen; Shen, Yong; Hu, Zhengfei |
| 作者单位 | 1.Nanjing Inst Technol, Sch Mat Sci & Engn, Nanjing 211167, Jiangsu, Peoples R China 2.Jiangsu Key Lab Adv Struct Mat & Applicat Technol, Nanjing 211167, Jiangsu, Peoples R China 3.Tongji Univ, Sch Mat Sci & Engn, Shanghai 201804, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Zhen,Zhang, Bin,Qu, Kejie,et al. The Decomposition Characteristics and Carbide Growth Mechanism of T91 Heat-Resistant Steel After Long-Term Creep at 650 °C[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2025:13. |
| APA | Zhang, Zhen.,Zhang, Bin.,Qu, Kejie.,Tu, Yekuan.,Xu, Zixuan.,...&Hu, Zhengfei.(2025).The Decomposition Characteristics and Carbide Growth Mechanism of T91 Heat-Resistant Steel After Long-Term Creep at 650 °C.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,13. |
| MLA | Zhang, Zhen,et al."The Decomposition Characteristics and Carbide Growth Mechanism of T91 Heat-Resistant Steel After Long-Term Creep at 650 °C".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2025):13. |
入库方式： OAI收割
来源：金属研究所
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