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The influence of niobium on the plastic deformation behaviors of 310s austenitic stainless steel weld metals at different temperatures
Zhan, Xu; Li, Dianzhong; Li, Yiyi; Lu, Shanping
2019-01-16
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume743Pages:648-655
AbstractThe deformation behaviors of 310s stainless steel weld metals (WMs) with different Nb contents are investigated under uniaxial tension at temperatures ranging from ambient temperature to 1000 degrees C. The results show that Nb effectively improves the strength of the WMs in the whole test temperatures range. The addition of Nb causes a change in the fractures of the WMs from intergranular brittle fractures to intragranular ductile fractures at elevated temperature. Hence, elemental Nb enhances the elevated temperature plasticity of the WMs. However, as the eutectic Nb(C, N) promotes the nucleation and propagation of the cracks, Nb decreases the elongation of the WMs at temperature below 700 degrees C. With the increase in the deformation temperature, the strength of the WMs decreases monotonously. However, the elongation of the WMs shows a nonmonotonic relationship with the temperatures. The deformation twins can occur at room temperature and improve the strength and elongation of the WMs. Meanwhile, the cracks nucleate around the eutectic Nb(C, N) at 1000 degrees C, leading to the minimum elongation of the Nb-bearing WMs in the whole test temperature range. The differential scanning calorimetry result suggests that the melting of the eutectic Nb(C, N) may be the dominant reason for the nucleation of the cracks and result in the reduction in the elongation of the Nb-bearing WM at 1000 degrees C.
Keyword310s austenitic weld metals Deformation twins Nb(C N) Temperature dependence Plasticity
Indexed BySCI
Language英语
WOS IDWOS:000456891500073
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81449
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Zhan, Xu,Li, Dianzhong,Li, Yiyi,et al. The influence of niobium on the plastic deformation behaviors of 310s austenitic stainless steel weld metals at different temperatures[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,743:648-655.
APA Zhan, Xu,Li, Dianzhong,Li, Yiyi,&Lu, Shanping.(2019).The influence of niobium on the plastic deformation behaviors of 310s austenitic stainless steel weld metals at different temperatures.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,743,648-655.
MLA Zhan, Xu,et al."The influence of niobium on the plastic deformation behaviors of 310s austenitic stainless steel weld metals at different temperatures".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 743(2019):648-655.
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