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Deformation Mechanism of L12-����� Phase in Bimodal �����-����� Precipitation Hardened Inconel 718 Superalloy

Journal Article


Abstract


  • Deformation mechanism of L12-����� phase in bimodal �����-����� precipitation hardened Inconel 718 alloy is characterized through high resolution transmission electron microscopy (HRTEM) observations. The spherical ����� particle exhibits morphological transition toward ellipsoid along the <110> direction and shows deformation anisotropy leading to orientation-dependent lattice misfitting status with ��-matrix. The deformation process of ����� phase is determined to be of APB (anti-phase boundary)-type shearing induced by gliding of paired {100}a/2< (Formula presented.) 10> superpartial dislocations, thus ����� phase plays a APB-strengthening role in Inconel 718 alloy.

Publication Date


  • 2018

Citation


  • Zhang, H., Li, C., Guo, Q., Li, H., & Liu, Y. (2018). Deformation Mechanism of L12-����� Phase in Bimodal �����-����� Precipitation Hardened Inconel 718 Superalloy. Advanced Engineering Materials, 20(11). doi:10.1002/adem.201800652

Scopus Eid


  • 2-s2.0-85053426937

Volume


  • 20

Issue


  • 11

Place Of Publication


Abstract


  • Deformation mechanism of L12-����� phase in bimodal �����-����� precipitation hardened Inconel 718 alloy is characterized through high resolution transmission electron microscopy (HRTEM) observations. The spherical ����� particle exhibits morphological transition toward ellipsoid along the <110> direction and shows deformation anisotropy leading to orientation-dependent lattice misfitting status with ��-matrix. The deformation process of ����� phase is determined to be of APB (anti-phase boundary)-type shearing induced by gliding of paired {100}a/2< (Formula presented.) 10> superpartial dislocations, thus ����� phase plays a APB-strengthening role in Inconel 718 alloy.

Publication Date


  • 2018

Citation


  • Zhang, H., Li, C., Guo, Q., Li, H., & Liu, Y. (2018). Deformation Mechanism of L12-����� Phase in Bimodal �����-����� Precipitation Hardened Inconel 718 Superalloy. Advanced Engineering Materials, 20(11). doi:10.1002/adem.201800652

Scopus Eid


  • 2-s2.0-85053426937

Volume


  • 20

Issue


  • 11

Place Of Publication