Transient Phase-Driven Cyclic Deformation in Additively Manufactured 15-5 PH Steel.

Tu-Ngoc Lam, Yu-Hao Wu, Chia-Jou Liu, Hobyung Chae, Soo-Yeol Lee, Jayant Jain, Ke An, E-Wen Huang

Abstract read

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Article in Materials (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed

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1 citing paper in PubMed.

Special Issue "Design and Application of Additive Manufacturing".Materials (Basel, Switzerland) · 2022
Article

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Authors and funding

8 authors.

Tu-Ngoc LamDepartment of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan.

Yu-Hao WuDepartment of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan.

Chia-Jou LiuDepartment of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan.

Hobyung ChaeDepartment of Materials Science and Engineering, Chungnam National University, Daejeon 34134, Korea.ORCID 0000-0002-8706-866X

Soo-Yeol LeeDepartment of Materials Science and Engineering, Chungnam National University, Daejeon 34134, Korea.

Jayant JainDepartment of Materials Science and Engineering, Indian Institute of Technology, New Delhi 110016, India.

Ke AnChemical and Engineering Materials Division, The Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.ORCID 0000-0002-6093-429X

E-Wen HuangDepartment of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan.ORCID 0000-0003-4986-0661

Funding

Ministry of Science and Technology Taiwan MOST 110-2224-E-007-001, MOST 108-2221-E-009-131-MY4, and MOST 110-2634-F-009-027National Research Foundation 2021R1A4A1031494, 2020K2A9A2A06070856

6 · The paper itself

Abstract

The present work extends the examination of selective laser melting (SLM)-fabricated 15-5 PH steel with the 8%-transient-austenite-phase towards fully-reversed strain-controlled low-cycle fatigue (LCF) test. The cyclic-deformation response and microstructural evolution were investigated via in-situ neutron-diffraction measurements. The transient-austenite-phase rapidly transformed into the martensite phase in the initial cyclic-hardening stage, followed by an almost complete martensitic transformation in the cyclic-softening and steady stage. The compressive stress was much greater than the tensile stress at the same strain amplitude. The enhanced martensitic transformation associated with lower dislocation densities under compression predominantly governed such a striking tension-compression asymmetry in the SLM-built 15-5 PH.

Indexed as

15-5 PH stainless steelin-situ neutron diffractionlow-cycle fatiguemartensite transformationselective laser melting

Identifiers

PMID35160723

DOI10.3390/ma15030777

PMCPMC8836881

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