TY - JOUR
T1 - Influence of recrystallization on high-temperature stress rupture property and fracture behavior of single crystal superalloy
AU - Zhang, Bing
AU - Lu, Xin
AU - Liu, Delin
AU - Tao, Chunhu
PY - 2012/8/15
Y1 - 2012/8/15
N2 - A single crystal (SC) superalloy was shot peened and heat treated to induce surface recrystallization, and then the influence of surface recrystallization on the high-temperature stress rupture property and fracture behavior of the SC superalloy was investigated through high-temperature stress rupture tests. The results show that surface recrystallization greatly reduced the high-temperature stress rupture life of the SC superalloy, and the stress rupture life declined nearly linearly with the increase of the recrystallized fraction of the transverse section. At 1000 °C/195. MPa, the recrystallized specimens and the bare ones (without recrystallization) fractured in the same mode-microvoid coalescence fracture. The recrystallized layers cracked in the initial stage, so they nearly had no bearing capacity, which is the main cause for the remarkable decrease in the stress rupture life.
AB - A single crystal (SC) superalloy was shot peened and heat treated to induce surface recrystallization, and then the influence of surface recrystallization on the high-temperature stress rupture property and fracture behavior of the SC superalloy was investigated through high-temperature stress rupture tests. The results show that surface recrystallization greatly reduced the high-temperature stress rupture life of the SC superalloy, and the stress rupture life declined nearly linearly with the increase of the recrystallized fraction of the transverse section. At 1000 °C/195. MPa, the recrystallized specimens and the bare ones (without recrystallization) fractured in the same mode-microvoid coalescence fracture. The recrystallized layers cracked in the initial stage, so they nearly had no bearing capacity, which is the main cause for the remarkable decrease in the stress rupture life.
KW - Fracture behavior
KW - Recrystallization
KW - Single crystal superalloy
KW - Stress rupture property
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U2 - 10.1016/j.msea.2012.04.109
DO - 10.1016/j.msea.2012.04.109
M3 - Article
AN - SCOPUS:84862153517
VL - 551
SP - 149
EP - 153
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
ER -