Cryogenic Fracture Behavior Of Metastable Austenitic Stainless Steel In A High Magnetic Field

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25thIFHTSECONGRESS PROCEEDINGS 11-14September2018 Xi'anChina ChineseHeatTreatmentSociety Tel:+86(0)1062920613 Email:[email protected] Web:www.chts.org.cn

Near surface modification affected by hydrogen/metal interaction

3.1 The metastable stainless steel system: global approach Second phase aspects in austenitic stainless steels considered the austenitic decomposition enhanced by mechanical, hydrogen or both interactions. In fact this whole material class is unstable below the Md temperature even with no hydrogen.

An Experimental Investigation on Rate Sensitivity of Fracture

tion. Also, Samuel et al.15) report that fracture toughness of 316L austenitic stainless steel decreases with an increase in the testing temperature. Shindo et al.16) evaluate the fracture toughness of 304 and 316 austenitic stainless steel at cryogenic temperature in a high magnetic field by J IC. Some investigations17,18) report that J

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mechanical behavior can be achieved with dispersions of metastable austenite particles. In such systems, critical experiments employing cryogenic high magnetic field (20 Tesla) treatments to vary retained austenite content in otherwise identical microstructures [31] demonstrate that

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at 77K. These are attractive because of their relatively low cost. (2) 300-series austenitic stainless steels, including particularly the low-carbon, high nitrogen modifications, 304LN and 316LN, which combine high strength and toughness at 4K with good weldability. These alloys are metastable austenitic steels that transform under strain at 4K.

Strain‐Induced Martensite Formation and Mechanical Properties

mechanical properties of Fe-19Cr-4Ni-3Mn-0.15N-0.15C wt.% austenitic stainless steel (in short Cr19NC15.15) during deformation at RT and cryogenic temperatures. In situ magnetic measurements of the martensite evolution during tensile tests at various temperatures were conducted. The triggering stress 𝜎

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austenitic steels that transform under strain at 4K. (3) High-strength, stable austenitic strength and toughness at 4K with good weldability. These alloys are metastable low-carbon, high nitrogen modifications, 304LN and 316LN, which combine high relatively low cost. (2) 300-series austenitic stainless steels, including particularly the

Cryogenic Fracture Behavior of Metastable Austenitic

Cryogenic Fracture Behavior of Metastable Austenitic Stainless Steel in a High Magnetic Field Y. Shindo, F. Narita, M. Suzuki, and I. Shindo Department of Materials Processing, Graduate School of Engineering, Tohoku University, Sendai, Japan ÓÄÊ 539.4

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8.3 Transformation Effects on Fracture Behavior 9. Fracture Toughness 9.1 Cryogenic Toughness Parameters 9.2 Metallurgical Variables 9.3 Anisotropy 9.4 Inhomogeneity 10. Special Factors in Magnet Applications 10.1 Magnetic Fields 10.2 Size Effect 10.3 Sensitization 10.4 Aging Effects on Steel Properties 10.5 Preventing Sensitization 11. Welding

PAPER OPEN ACCESS Related content Fatigue and fracture of

May 20, 2020 Fatigue and fracture of three austenitic stainless steels at cryogenic temperatures D M McRae1, S Balachandran1 and R P Walsh1 1National High Magnetic Field Laboratory, 1800 E. Paul Dirac Dr., Tallahassee, FL 32310 [email protected] Abstract. For the past couple decades, 316LN stainless steel has remained the go-to alloy

§24. Fracture and Fatigue Crack Growth Behavior of Austenitic

this work is to study the effects of cryogenic high magnetic field environments on the fracture1) and fatigue crack growth2) behavior of austenitic stainless steels. 2. Procedure (1) The fracture behavior of the metastable austenitic stainless steels at cryogenic temperatures is studied.