Skip to main content
placeholder image

The heterogeneous microstructure of heat affect zone and its effect on creep resistance for friction stir joints on 9Cr���1.5���W heat resistant steel

Journal Article


Abstract


  • The heterogeneity of microstructures in heat affect zone of 9Cr-1.5 W heat resistant steel friction stir welding joint was studied, and its influence on the weld creep property was discussed. The inter critical heat affect zone at the advancing side of the weld is found as the most likely area to be failure during creep, owing to the formation of ferrite grains and lath martensite with low carbon content and the coarsening of M23C6 carbides. The as-welded joint exhibits a good creep resistance of 1173.8 h creep rupture time at 600 ��C temperature and 200 MPa stress.

Publication Date


  • 2019

Citation


  • Zhang, C., Cui, L., Wang, D., Liu, Y., Liu, C., & Li, H. (2019). The heterogeneous microstructure of heat affect zone and its effect on creep resistance for friction stir joints on 9Cr���1.5���W heat resistant steel. Scripta Materialia, 158, 6-10. doi:10.1016/j.scriptamat.2018.08.028

Scopus Eid


  • 2-s2.0-85051556149

Start Page


  • 6

End Page


  • 10

Volume


  • 158

Issue


Place Of Publication


Abstract


  • The heterogeneity of microstructures in heat affect zone of 9Cr-1.5 W heat resistant steel friction stir welding joint was studied, and its influence on the weld creep property was discussed. The inter critical heat affect zone at the advancing side of the weld is found as the most likely area to be failure during creep, owing to the formation of ferrite grains and lath martensite with low carbon content and the coarsening of M23C6 carbides. The as-welded joint exhibits a good creep resistance of 1173.8 h creep rupture time at 600 ��C temperature and 200 MPa stress.

Publication Date


  • 2019

Citation


  • Zhang, C., Cui, L., Wang, D., Liu, Y., Liu, C., & Li, H. (2019). The heterogeneous microstructure of heat affect zone and its effect on creep resistance for friction stir joints on 9Cr���1.5���W heat resistant steel. Scripta Materialia, 158, 6-10. doi:10.1016/j.scriptamat.2018.08.028

Scopus Eid


  • 2-s2.0-85051556149

Start Page


  • 6

End Page


  • 10

Volume


  • 158

Issue


Place Of Publication