Correlationship Between Jic And Equivalent Fracture Strain Determined By Small-Punch Test In JN1, JJ1 And JK2 Austenitic Stainless Steels

Maribel L. Saucedo-Muñoz; Toshiyuki Hashida; Victor M. Lopez-Hiratal

doi:10.1002/9781118371305.ch56

Correlationship Between Jic And Equivalent Fracture Strain Determined By Small-Punch Test In JN1, JJ1 And JK2 Austenitic Stainless Steels

Maribel L. Saucedo-Muñoz, Toshiyuki Hashida, Victor M. Lopez-Hiratal

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

Abstract

Small-punch tests and determination of fracture toughness J_IC were conducted at 4 and 77 K on new cryogenic JN1, JJ1 and JK2 austenitic stainless steels, after isothermal aging. Equivalent fracture strain eqf was determined by measuring the reduction of thickness in the small-punch test specimen. A linear dependence of Jic on eqf was found in these new materials. Regression analysis of experimental data produced the following linear relation J_IC = 1304.1 εqf + 8.09 [kJm^-2]. An analysis of present work relation was pursued on the basis of material properties and evaluation method of J_IC. Results showed that the slope value has a strong dependence on material yield strength and Jic evaluation method. This linear relation is useful for the evaluation of fracture toughness J_IC, measuring the equivalent fracture strain εqf by means of small-punch test. Thus it can be useful for assessing the degradation of fracture toughness in small areas such as, the heat-affected zone in welded components.

Original language	English
Title of host publication	Characterization of Minerals, Metals, and Materials
Publisher	John Wiley and Sons
Pages	487-494
Number of pages	8
ISBN (Print)	9781118291221
DOIs	https://doi.org/10.1002/9781118371305.ch56
State	Published - 15 May 2012
Externally published	Yes

Keywords

Austenitic stainless steels
Fracture toughness
Thermal aging embrittlement

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10.1002/9781118371305.ch56

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title = "Correlationship Between Jic And Equivalent Fracture Strain Determined By Small-Punch Test In JN1, JJ1 And JK2 Austenitic Stainless Steels",

abstract = "Small-punch tests and determination of fracture toughness JIC were conducted at 4 and 77 K on new cryogenic JN1, JJ1 and JK2 austenitic stainless steels, after isothermal aging. Equivalent fracture strain eqf was determined by measuring the reduction of thickness in the small-punch test specimen. A linear dependence of Jic on eqf was found in these new materials. Regression analysis of experimental data produced the following linear relation JIC = 1304.1 εqf + 8.09 [kJm-2]. An analysis of present work relation was pursued on the basis of material properties and evaluation method of JIC. Results showed that the slope value has a strong dependence on material yield strength and Jic evaluation method. This linear relation is useful for the evaluation of fracture toughness JIC, measuring the equivalent fracture strain εqf by means of small-punch test. Thus it can be useful for assessing the degradation of fracture toughness in small areas such as, the heat-affected zone in welded components.",

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Correlationship Between Jic And Equivalent Fracture Strain Determined By Small-Punch Test In JN1, JJ1 And JK2 Austenitic Stainless Steels. / Saucedo-Muñoz, Maribel L.; Hashida, Toshiyuki; Lopez-Hiratal, Victor M.
Characterization of Minerals, Metals, and Materials. John Wiley and Sons, 2012. p. 487-494.

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

TY - CHAP

T1 - Correlationship Between Jic And Equivalent Fracture Strain Determined By Small-Punch Test In JN1, JJ1 And JK2 Austenitic Stainless Steels

AU - Saucedo-Muñoz, Maribel L.

AU - Hashida, Toshiyuki

AU - Lopez-Hiratal, Victor M.

PY - 2012/5/15

Y1 - 2012/5/15

N2 - Small-punch tests and determination of fracture toughness JIC were conducted at 4 and 77 K on new cryogenic JN1, JJ1 and JK2 austenitic stainless steels, after isothermal aging. Equivalent fracture strain eqf was determined by measuring the reduction of thickness in the small-punch test specimen. A linear dependence of Jic on eqf was found in these new materials. Regression analysis of experimental data produced the following linear relation JIC = 1304.1 εqf + 8.09 [kJm-2]. An analysis of present work relation was pursued on the basis of material properties and evaluation method of JIC. Results showed that the slope value has a strong dependence on material yield strength and Jic evaluation method. This linear relation is useful for the evaluation of fracture toughness JIC, measuring the equivalent fracture strain εqf by means of small-punch test. Thus it can be useful for assessing the degradation of fracture toughness in small areas such as, the heat-affected zone in welded components.

AB - Small-punch tests and determination of fracture toughness JIC were conducted at 4 and 77 K on new cryogenic JN1, JJ1 and JK2 austenitic stainless steels, after isothermal aging. Equivalent fracture strain eqf was determined by measuring the reduction of thickness in the small-punch test specimen. A linear dependence of Jic on eqf was found in these new materials. Regression analysis of experimental data produced the following linear relation JIC = 1304.1 εqf + 8.09 [kJm-2]. An analysis of present work relation was pursued on the basis of material properties and evaluation method of JIC. Results showed that the slope value has a strong dependence on material yield strength and Jic evaluation method. This linear relation is useful for the evaluation of fracture toughness JIC, measuring the equivalent fracture strain εqf by means of small-punch test. Thus it can be useful for assessing the degradation of fracture toughness in small areas such as, the heat-affected zone in welded components.

KW - Austenitic stainless steels

KW - Fracture toughness

KW - Thermal aging embrittlement

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DO - 10.1002/9781118371305.ch56

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BT - Characterization of Minerals, Metals, and Materials

PB - John Wiley and Sons

ER -

Correlationship Between Jic And Equivalent Fracture Strain Determined By Small-Punch Test In JN1, JJ1 And JK2 Austenitic Stainless Steels

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