Phase Stress Partition in Gray Cast Iron Using In Situ Neutron Diffraction Measurements

Tu Ngoc Lam; Szu Chien Wu; Hobyung Chae; Shi Wei Chen; Jayant Jain; Soo Yeol Lee; Ke An; Sven C. Vogel; Sung Mao Chiu; Dunji Yu; E. Wen Huang

doi:10.1007/s11661-020-05933-8

Phase Stress Partition in Gray Cast Iron Using In Situ Neutron Diffraction Measurements

Tu Ngoc Lam, Szu Chien Wu, Hobyung Chae, Shi Wei Chen, Jayant Jain, Soo Yeol Lee, Ke An, Sven C. Vogel, Sung Mao Chiu, Dunji Yu, E. Wen Huang

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Gray cast iron comprises α-Fe, Fe₃C and graphite with their different anisotropies in terms of structure and mechanical behavior. We perform two different deformation paths as tension-compression and compression-tension on bulk gray iron to capture the stress partitioning. Using in situ neutron diffraction, the composite-like deformation behaviors of α-Fe and Fe₃C are revealed simultaneously. Within the elastic deformation stage, both deformation paths do not cause load transfer. However, when the applied compressive stress exceeds 300 MPa, there is a clear load sharing in both paths. From microscopic examinations, the debonding between matrix and graphite is clarified.

Original language	English
Pages (from-to)	5029-5035
Number of pages	7
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	51
Issue number	10
DOIs	https://doi.org/10.1007/s11661-020-05933-8
State	Published - Oct 1 2020
Externally published	Yes

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Publisher Copyright:
© 2020, The Minerals, Metals & Materials Society and ASM International.

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Lam, T. N., Wu, S. C., Chae, H., Chen, S. W., Jain, J., Lee, S. Y., An, K., Vogel, S. C., Chiu, S. M., Yu, D., & Huang, E. W. (2020). Phase Stress Partition in Gray Cast Iron Using In Situ Neutron Diffraction Measurements. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 51(10), 5029-5035. https://doi.org/10.1007/s11661-020-05933-8

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abstract = "Gray cast iron comprises α-Fe, Fe3C and graphite with their different anisotropies in terms of structure and mechanical behavior. We perform two different deformation paths as tension-compression and compression-tension on bulk gray iron to capture the stress partitioning. Using in situ neutron diffraction, the composite-like deformation behaviors of α-Fe and Fe3C are revealed simultaneously. Within the elastic deformation stage, both deformation paths do not cause load transfer. However, when the applied compressive stress exceeds 300 MPa, there is a clear load sharing in both paths. From microscopic examinations, the debonding between matrix and graphite is clarified.",

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AU - Lam, Tu Ngoc

AU - Wu, Szu Chien

AU - Chae, Hobyung

AU - Chen, Shi Wei

AU - Jain, Jayant

AU - Lee, Soo Yeol

AU - An, Ke

AU - Vogel, Sven C.

AU - Chiu, Sung Mao

AU - Yu, Dunji

AU - Huang, E. Wen

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N2 - Gray cast iron comprises α-Fe, Fe3C and graphite with their different anisotropies in terms of structure and mechanical behavior. We perform two different deformation paths as tension-compression and compression-tension on bulk gray iron to capture the stress partitioning. Using in situ neutron diffraction, the composite-like deformation behaviors of α-Fe and Fe3C are revealed simultaneously. Within the elastic deformation stage, both deformation paths do not cause load transfer. However, when the applied compressive stress exceeds 300 MPa, there is a clear load sharing in both paths. From microscopic examinations, the debonding between matrix and graphite is clarified.

AB - Gray cast iron comprises α-Fe, Fe3C and graphite with their different anisotropies in terms of structure and mechanical behavior. We perform two different deformation paths as tension-compression and compression-tension on bulk gray iron to capture the stress partitioning. Using in situ neutron diffraction, the composite-like deformation behaviors of α-Fe and Fe3C are revealed simultaneously. Within the elastic deformation stage, both deformation paths do not cause load transfer. However, when the applied compressive stress exceeds 300 MPa, there is a clear load sharing in both paths. From microscopic examinations, the debonding between matrix and graphite is clarified.

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Phase Stress Partition in Gray Cast Iron Using In Situ Neutron Diffraction Measurements

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