IMR OpenIR
Cold Cracking Sensitivity of a Newly Developed 9Cr2WVTa Steel
Wang, Jian; Lu, Shanping; Li, Yongkui; Hu, Qingxian; Rong, Lijian; Li, Dianzhong; Lu, SP (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.; Lu, SP (reprint author), Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China.
2017
Source PublicationJOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
ISSN1059-9495
Volume26Issue:1Pages:258-267
AbstractCold cracking susceptibility of the newly developed 9Cr2WVTa steel plate welded with the corresponding gas tungsten arc welding wire has been evaluated using the implant test and the Y-groove cracking test. Measurement of diffusible hydrogen content shows that the welding wire is ultra-low welding consumables (0.40 mL/100 g). Results of the implant test show that the fracture critical stress without pre-heating is only 300 MPa and increases up to the yield strength with pre-heating to 150 A degrees C. The fracture critical stress under high heat input decreases to 250 MPa owing to the formation of quenched microstructure. Fractographies show ductile dimple fracture under higher loads and quasi-cleavage fracture under lower loads. Results of Y-groove cracking tests show that the minimum pre-heating temperature is 150 A degrees C and the maximum transverse residual stress is located at the root of the weld metal. Therefore, the heat input should be chosen in a proper range and the pre-heating temperature is no less than 150 A degrees C.; Cold cracking susceptibility of the newly developed 9Cr2WVTa steel plate welded with the corresponding gas tungsten arc welding wire has been evaluated using the implant test and the Y-groove cracking test. Measurement of diffusible hydrogen content shows that the welding wire is ultra-low welding consumables (0.40 mL/100 g). Results of the implant test show that the fracture critical stress without pre-heating is only 300 MPa and increases up to the yield strength with pre-heating to 150 A degrees C. The fracture critical stress under high heat input decreases to 250 MPa owing to the formation of quenched microstructure. Fractographies show ductile dimple fracture under higher loads and quasi-cleavage fracture under lower loads. Results of Y-groove cracking tests show that the minimum pre-heating temperature is 150 A degrees C and the maximum transverse residual stress is located at the root of the weld metal. Therefore, the heat input should be chosen in a proper range and the pre-heating temperature is no less than 150 A degrees C.
description.department[wang, jian ; lu, shanping ; li, yongkui ; li, dianzhong] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china ; [wang, jian ; lu, shanping ; rong, lijian] chinese acad sci, inst met res, key lab nucl mat & safety assessment, shenyang 110016, peoples r china ; [hu, qingxian] jiangsu univ sci & technol, jiangsu prov key lab adv welding technol, zhenjiang 212003, peoples r china
KeywordCold Cracking Diffusible Hydrogen Implant Test Modeling And Simulation Steel Y-groove Cracking Test
Subject AreaMaterials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China [91226204]; Chinese Academy of Science [XDA03010304]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78371
Collection中国科学院金属研究所
Corresponding AuthorLu, SP (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.; Lu, SP (reprint author), Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Wang, Jian,Lu, Shanping,Li, Yongkui,et al. Cold Cracking Sensitivity of a Newly Developed 9Cr2WVTa Steel[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2017,26(1):258-267.
APA Wang, Jian.,Lu, Shanping.,Li, Yongkui.,Hu, Qingxian.,Rong, Lijian.,...&Lu, SP .(2017).Cold Cracking Sensitivity of a Newly Developed 9Cr2WVTa Steel.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,26(1),258-267.
MLA Wang, Jian,et al."Cold Cracking Sensitivity of a Newly Developed 9Cr2WVTa Steel".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE 26.1(2017):258-267.
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