TY - GEN
T1 - Correlationship between J ICand equivalent fracture strain determined by small-punch test in JN1, JJ1 an JK2 austenitic stainless steels
AU - Saucedo-Muñoz, Maribel L.
AU - Hashida, Toshiyuki
AU - Lopez-Hirata, Victor M.
PY - 2012
Y1 - 2012
N2 - 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 ε qf was determined by measuring the reduction of mickness in the small-punch test specimen. A linear dependence of J IC on ε qf was found in these new materials. Regression analysis of experimental data produced the following linear relation J IC = 1304.1 ε qf + 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 J IC evaluation method. This linear relation is useful for the evaluation of fracture toughness J IC, measuring the equivalent fracture strain ε qf 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 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 ε qf was determined by measuring the reduction of mickness in the small-punch test specimen. A linear dependence of J IC on ε qf was found in these new materials. Regression analysis of experimental data produced the following linear relation J IC = 1304.1 ε qf + 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 J IC evaluation method. This linear relation is useful for the evaluation of fracture toughness J IC, measuring the equivalent fracture strain ε qf 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 - Small-punch test
KW - Thermal aging embrittlement
UR - http://www.scopus.com/inward/record.url?scp=84860748725&partnerID=8YFLogxK
M3 - Contribución a la conferencia
AN - SCOPUS:84860748725
SN - 9781118291221
T3 - TMS Annual Meeting
SP - 487
EP - 494
BT - Characterization of Minerals, Metals, and Materials - Held During the TMS 2012 Annual Meeting and Exhibition
T2 - Characterization of Minerals, Metals, and Materials - TMS 2012 Annual Meeting and Exhibition
Y2 - 11 March 2012 through 15 March 2012
ER -