Tensile Behavior of 17-4PH Stainless Steel under Rapid Heating

Kim, Jong Hwan; Lee, Kee Bhum; Kim, Jae-Hoon

doi:10.4028/www.scientific.net/kem.297-300.1482

Cited by 3 publications

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“…The difference between the S2 sample and the S1 sample is that a uniaxial tensile load of 10 kN is applied to S2 during the aging process, and the calculated tensile stress is 500 MPa according to the sample size. 17-4PH precipitation-hardening martensitic stainless steel has a tensile yield strength of 739 MPa at 500 °C [ 3 ]. Therefore, the tensile stress of loading 500 MPa at 475 °C in this experiment did not cause plastic deformation of the sample.…”

Section: Resultsmentioning

confidence: 99%

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In Situ Characterization of 17-4PH Stainless Steel by Small-Angle Neutron Scattering

Yan

Wang

et al. 2023

Materials

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17-4PH martensitic steel is usually used as valve stems in nuclear power plants and it suffers from thermal aging embrittlement due to long-time service in a high-temperature and high-pressure environment. Here, we characterized the evolution of microstructures at the nano-scale in 17-4PH steel by in situ small-angle neutron scattering (SANS) with a thermo-mechanically coupled loading device. The device could set different temperatures and tensile so that an in situ SANS experiment could dynamically characterize the process of nanoscale structural changes. The results showed that with increasing thermal aging time, the ε-Cu phase precipitates and grows as the temperature is 475 °C and 590 °C, and the ε-Cu phase is spherical at 475 °C but became elongated cylinders at 590 °C. Moreover, the loading stress could aid in the growth of the ε-Cu phase at 475 °C.

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Section: Resultsmentioning

confidence: 99%

“…Numerous investigations have been conducted to explore the transformations in the microstructure and mechanical properties of 17-4PH stainless steel following solution and aging treatments [ 2 , 3 , 4 , 5 ]. In terms of microstructure, spinodal decomposition occurs on the martensite matrix after long-term service.…”

Section: Introductionmentioning

confidence: 99%

In Situ Characterization of 17-4PH Stainless Steel by Small-Angle Neutron Scattering

Yan

Wang

et al. 2023

Materials

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Study of Thermal Barrier Coating on Fire Fighting Robot

Oh¹

2018

journalofthekoreansocietyofmechanicaltechnology

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Thermo-Mechanical Characteristics of a Plate Structure under Mechanical and Thermal Loading

2006

Journal of the Korean Society for Aeronautical & Space Scie

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This paper proposes an algorithm for switching LQ(Linear Quadratic) controllers designed at each flight envelope without a bump phenomenon. This algorithm is derived to apply to LQ controller more easily than existing implementation algorithm and is proposed to consider trim points of nonlinear models, which is adequate to real applications. This paper exemplifies the control performance improvement via simulations applied to LQ control of a supersonic test aircraft as a benchmark problem to test the proposed algorithm performance.

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Tensile Behavior of 17-4PH Stainless Steel under Rapid Heating

Cited by 3 publications

References 0 publications

In Situ Characterization of 17-4PH Stainless Steel by Small-Angle Neutron Scattering

In Situ Characterization of 17-4PH Stainless Steel by Small-Angle Neutron Scattering

Study of Thermal Barrier Coating on Fire Fighting Robot

Thermo-Mechanical Characteristics of a Plate Structure under Mechanical and Thermal Loading

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