%0 Journal Article
%T THERMAL NUCLEATION AND GROWTH OF He BUBBLES IN He IMPLANTED STAINLESS STEELS
%A ZHANG Lei WANG Peixuan TAO Rong MA Ruzhang ZHANG Guoguang University of Science
%A Technology Beijing
%A Beijing
%A China professor
%A <br>ZHANG Lei WANG Peixuan TAO Rong MA Ruzhang ZHANG Guoguang University of Science and Technology Beijing
%A Beijing
%A China professor
%J 金属学报(英文版)
%D 1993
%I 
%X Nucleation and growth of He bubbles at different annealing temperatures T≤1023 K in stain-less steels HR-2 and SS321,implanted with He~+(40-70 keV.1×10~(16)-6×10~(17) He~+/cm~2),were ohserved under TEM.T=0.45T_m seems to be a transitiontemperature.The He bubbles continue mainly their nucleation at 0.3T_m< T<0.45T_m,andgrow predominantly at T≥0.45T_m,due probably to migration and coalescence by surfacediffusion of metal atoms around the bubbles.The apparent activation energies for the growthare found to he 0.41 and 0.31 eV for HR-2 and SS321 respectively.The bubble density inHR-2 is greater than that in SS321 within whole measuring temperature range,and the onsettemperature of rapid swelling is also higher.It is believed that the resistance of HR-2 to He issuperior to that fo SS321.
%K stainless steel
%K ion implantation
%K He bubble
%K steel SS32I
%K steel HR-2<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=B2AECB83C41E2F29CE0277AB476608FC&yid=D418FDC97F7C2EBA&vid=B31275AF3241DB2D&iid=38B194292C032A66&sid=50BBDFAC8381694B&eid=6235172E4DDBA109&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=9