TY - GEN
T1 - Evaluation of thermal aging embrittlement of austenitic stainless steels JN1, JJ1 and JK2 steels by cryogenic small-punch testing
AU - Saucedo-Muñoz, Maribel L.
AU - Komazaki, Shin Ichi
AU - Hashida, Toshiyuki
AU - Lopez-Hirata, Victor M.
PY - 2011
Y1 - 2011
N2 - Small-punch tests were conducted at 4, 77 and 293 K on three types of austenitic stainless steels JN1, JJ1 and JK2, which were solution treated, water-quenched and then aged at 923, 973, 1023 and 1073 K for 5 h. Small-punch test energy was employed for the evaluation of the aging- induced embrittlement behavior in these materials. Fracture surface of small punch test specimen for the solution treated steels exhibited a ductile fracture, showing the highest SP test energy values. The presence of intergranular brittle fracture was observed in aged specimens. Small-punch test energy decreased significantly as the aging process progressed. The highest and lowest decrease in small-punch test energy with aging temperature occurred in JN1 and JK2 steels, respectively. The decrease in small-punch test energy showed to examine appropriately the aging-induced embrittlement in these materials. The difference in aging-induced embrittlement behavior for these steels was explained based on the volume fraction of intergranular precipitates in aged samples.
AB - Small-punch tests were conducted at 4, 77 and 293 K on three types of austenitic stainless steels JN1, JJ1 and JK2, which were solution treated, water-quenched and then aged at 923, 973, 1023 and 1073 K for 5 h. Small-punch test energy was employed for the evaluation of the aging- induced embrittlement behavior in these materials. Fracture surface of small punch test specimen for the solution treated steels exhibited a ductile fracture, showing the highest SP test energy values. The presence of intergranular brittle fracture was observed in aged specimens. Small-punch test energy decreased significantly as the aging process progressed. The highest and lowest decrease in small-punch test energy with aging temperature occurred in JN1 and JK2 steels, respectively. The decrease in small-punch test energy showed to examine appropriately the aging-induced embrittlement in these materials. The difference in aging-induced embrittlement behavior for these steels was explained based on the volume fraction of intergranular precipitates in aged samples.
KW - Austenitic stainless steels
KW - Small-punch test
KW - Thermal aging embritflement
UR - http://www.scopus.com/inward/record.url?scp=84861408276&partnerID=8YFLogxK
M3 - Contribución a la conferencia
AN - SCOPUS:84861408276
SN - 9781617827389
T3 - TMS Annual Meeting
SP - 127
EP - 134
BT - EPD Congress 2011 - Held During TMS 2011 Annual Meeting and Exhibition
T2 - EPD Congress 2011 - TMS 2011 Annual Meeting and Exhibition
Y2 - 27 February 2011 through 3 March 2011
ER -