TY - JOUR
T1 - Annealing behavior of irradiation hardening and microstructure in helium-implanted reduced activation martensitic steel
AU - Kimura, A.
AU - Kasada, R.
AU - Sugano, R.
AU - Hasegawa, A.
AU - Matsui, H.
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2000
Y1 - 2000
N2 - Post-implantation annealing behavior was investigated for a reduced activation martensitic steel (RAMS), which was homogeneously implanted with 580 at.ppm of helium by cyclotron utilizing energy degrader at below 429 K. Post-implantation isochronal annealing caused no age hardening but the gradual recovery of the hardening even above 673 K, while the neutron irradiated specimen showed a complete recovery of the hardening by the annealing above 673 K. Two-component analysis of positron lifetime measurements along with hardness measurements indicated that long lifetime component (τ2) in the helium-implanted steel still existed after annealing up to 873 K. Evolution of helium bubbles during annealing was examined by TEM and it was revealed that helium bubbles tend to be formed at lath boundaries by the annealing above 723 K. Helium desorption was observed by the annealing above 773 K where recovery of the hardening began.
AB - Post-implantation annealing behavior was investigated for a reduced activation martensitic steel (RAMS), which was homogeneously implanted with 580 at.ppm of helium by cyclotron utilizing energy degrader at below 429 K. Post-implantation isochronal annealing caused no age hardening but the gradual recovery of the hardening even above 673 K, while the neutron irradiated specimen showed a complete recovery of the hardening by the annealing above 673 K. Two-component analysis of positron lifetime measurements along with hardness measurements indicated that long lifetime component (τ2) in the helium-implanted steel still existed after annealing up to 873 K. Evolution of helium bubbles during annealing was examined by TEM and it was revealed that helium bubbles tend to be formed at lath boundaries by the annealing above 723 K. Helium desorption was observed by the annealing above 773 K where recovery of the hardening began.
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U2 - 10.1016/S0022-3115(00)00090-8
DO - 10.1016/S0022-3115(00)00090-8
M3 - Article
AN - SCOPUS:0001646810
VL - 283-287
SP - 827
EP - 831
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
IS - PART II
ER -