Cryogenic Fracture Behavior of 316LN in Magnetic Fields up to 14.6 T

Chan, J.W.; Chu, David; Tseng, Chin-Chung; Morris, J. W.

doi:10.1007/978-1-4757-9053-5_154

Cited by 9 publications

(5 citation statements)

References 2 publications

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“…It has been suggested that EL and RA are influenced by the slight difference in the chemical composition of the weld metal, welding method and welding conditions. [15], c [16], d-l [17], m [18], n [19] o [20], p [21], q,r [22], s [23], t,u [24], v [25], and w [26], respectively. Figure 4 shows a plot of C+N content on the horizontal axis and σ 0.2 and σ B on the vertical axis at 4.2 K. To check if there is a correlation between them and the C+N content, the approximate equations were added to figure 4 and the R 2 of each was evaluated.…”

Section: Discussionmentioning

confidence: 99%

“…The reference data in this report are those reported for type 304L [8][9][10][11][12][13], 316L [8,9,14,15], and 316LN [13,[15][16][17][18][19][20][21][22][23][24][25][26] base materials and for weldments using type 304L [9,16,[27][28][29][30], 316L [9,16,[27][28][29]31], and 316LN [16,32,33] base materials for tensile properties, fracture toughness, or both at cryogenic temperatures. The base materials have a low carbon content (approximately 0.05 mass%) to suppress intergranular precipitation of chromium carbides and to ensure strength and toughness at low temperatures.…”

Section: Materials and Test Proceduresmentioning

confidence: 99%

“…Suutala diagram showing the data of type 304L, 316L, and 316LN steels and their weldments. Each plot of Type 316LN is labeled as a [13], b[15], c[16], d-l[17], m[18], n[19] o[20], p[21], q,r[22], s[23], t,u[24], v[25], and w[26], respectively.…”

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confidence: 99%

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Strength and Fracture Toughness of Type 304 and 316 Austenitic Stainless Steels at 4.2 K

Sakurai,

Umezawa,

Ono

2024

IOP Conf. Ser.: Mater. Sci. Eng.

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The tensile properties and fracture toughness of type 304L, 316L and 316LN austenitic stainless steels and their weldments at cryogenic temperatures have been summarized in the literature. Rolled plates showed a trade-off relationship between 0.2% proof stress and planestrain fracture toughness with those at 4.2 K. The 0.2% proof stress increases with increasing C+N content, and the fracture toughness depends on their austenite stability to α’-martensitic transformation at the crack tip. The formation of shear bands at low strains is directly related to fracture toughness. The stacking fault energy represents the shear-band formation as well as slip deformation manner, so alloy design with higher Ni, Mn, and Mo contents in the chemical composition range of 316LN would be desirable to improve fracture toughness due to higher stacking fault energy.

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Section: Discussionmentioning

confidence: 99%

Section: Materials and Test Proceduresmentioning

confidence: 99%

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Strength and Fracture Toughness of Type 304 and 316 Austenitic Stainless Steels at 4.2 K

Sakurai,

Umezawa,

Ono

2024

IOP Conf. Ser.: Mater. Sci. Eng.

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“…The general trend is that the fracture toughness decreases as the yield strength of the material increases, the data obtained in this paper being in reasonable qualitative agreement with the experiments taken from the literature. Murase et al (1993), Nyilas and Mitterbacher (2010), Chan et al (1994), Drexler et al (1994), Krauth and Nyilas (1980), Mazandarany et al (1980), Muster and Elster (1990), Nyilas and Yanagi (1989) and Ogata et al (1992).…”

Section: Discussionmentioning

confidence: 99%

Flow and fracture of austenitic stainless steels at cryogenic temperatures

Fernández-Pisón¹,

Rodríguez-Martínez²,

García-Tabares³

et al. 2021

Preprint

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In this paper, we have characterized the microstructural evolution and the plastic flow and fracture behaviours of AISI 304L and AISI 316LN stainless steel grades at liquid nitrogen temperature (77 K) and at liquid helium temperature (4 K). Uninterrupted tensile experiments, where the sample is continuously deformed under quasi-static loading conditions until fracture, have been carried out with a Single-Section Sample to obtain the stress-strain characteristics of the two grades. Interrupted tensile experiments, in which the sample is unloaded before fracture, have been performed with a novel Double-Section Sample to later characterize the strain-induced martensitic transformation at different levels of deformation. The content of martensite has been determined post-mortem, using magnetic induction, electron backscatter diffraction and quantitative light optical micrography. The results obtained with the three methods show quantitative agreement, and reveal that the martensitic transformation in AISI 304L occurs faster and to a greater extent than in AISI 316LN both at 77 K and at 4 K. To the authors' knowledge, in this paper we provide the first experimental results for the evolution of the content of strain-induced martensite in AISI 304L and AISI 316LN samples tested at liquid helium temperature. In addition, the experimental data for the evolution of the martensite volume fraction with the strain have been used to identify the temperature-dependent parameters of the martensitic transformation kinetic models proposed by Olson and Cohen (1975) and Garion and Skoczen (2002). Moreover, Mode I fracture tests with fatigue-precracked Compact Samples have been carried out to determine the fracture properties of the two investigated materials using the "resistance curve procedure" (ASTM-E1820-20a, 2020). The crack-growth resistance curves have been obtained with four different methods here referred to as ASTM Compliance Method, W-N Compliance Method, Modified W-N Compliance Method and ASTM Normalization Method, which is an original methodological contribution of this paper. While the four approaches yield similar results for the fracture toughness, only the W-N Compliance Method and the Modified W-N Compliance Method, the latter being proposed in this paper, fulfil all the requirements of the standard ASTM-E1820-20a (2020) so that the calculated fracture toughness can be accepted as a material property. The comparison of results for both materials and testing temperatures shows that the AISI 316LN displays higher fracture toughness than the AISI 304L. Moreover, post-mortem microstructural analysis of the Compact Samples near the fracture surface has revealed that the content of martensite is greater in AISI 304L than in AISI 316LN. Furthermore, for AISI 304L more martensite is formed in the sample tested at 77 K because the plastic deformation near the crack is greater than at 4 K.

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“…When the test is carried out under such a condition as the martenSltIc transformation is suppressed, the magnetic effect on fracture toughness disappears. 2 ,3 Under suitable conditions, an increase in fracture toughness was observed 3 by an application of high magnetic fields.…”

Section: Introductionmentioning

confidence: 95%

Mechanical Properties of a Boron Added Superalloy at 4K and Magnetic Effect

Shibata

Kadota

Kohno

et al. 2000

Advances in Cryogenic Engineering Materials

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Magnetic effects on tensile and fracture properties of an aged superalloy containing boron (base composition similar to Incoloy 908) were investigated in liquid helium. Heat treatments at 980 0 C for Ih and at 650 0 C for 200 h were performed in a vacuum furnace at FZK under observation of an in-situ oxygen emf sensor. Tensile and fracture tests were performed at the University of Tokyo with and without an 8 tesla magnetic field generated with a solenoid-type superconducting magnet. Three extensometers were attached concentrically to a round bar specimen to avoid an effect of bending during measurement of Young's modulus and fracture toughness JR' Calibration of these extensometers was carried out under zero and an 8 tesla magnetic field. An effect of the magnetic field on the load cell was observed from Young's modulus of commercially pure Ti measured using these extensometers. Fracture tests were conducted by the novel JEIT fracture test (J evaluation on tensile test) and usual CT test. No magnetic effect on Young's modulus of the superalloy was observed. Magnetic effects on fracture toughness could not discussed by CT tests, tests, owing to early unstable fracture. The results of JEIT tests showed that a magnetic effect on fracture toughness is small if any. Scattering, however, was fairly large and the number of measurement was not enough. Therefore, more detailed future works are needed to confirm a magnetic effect on fracture toughness.

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Cryogenic Fracture Behavior of 316LN in Magnetic Fields up to 14.6 T

Cited by 9 publications

References 2 publications

Strength and Fracture Toughness of Type 304 and 316 Austenitic Stainless Steels at 4.2 K

Strength and Fracture Toughness of Type 304 and 316 Austenitic Stainless Steels at 4.2 K

Flow and fracture of austenitic stainless steels at cryogenic temperatures

Mechanical Properties of a Boron Added Superalloy at 4K and Magnetic Effect

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