THERMAL NUCLEATION AND GROWTH OF He BUBBLES IN He IMPLANTED STAINLESS STEELS

作     者：ZHANG Lei WANG Peixuan TAO Rong MA Ruzhang ZHANG Guoguang University of Science and Technology Beijing,Beijing,China professor,Department of Materials Physics.University of Science and Technology Beijing.Beijing 100083,China 

作者机构：Beijing Univ of Science and Technology Beijing China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：1993年第6卷第3期

页      面：186-190页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：stainless steel ion implantation He bubble steel SS32I steel HR-2 

摘      要：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 transition *** He bubbles continue mainly their nucleation at 0.3T_m T0.45T_m,and grow predominantly at T≥0.45T_m,due probably to migration and coalescence by surface diffusion of metal atoms around the *** apparent activation energies for the growth are found to he 0.41 and 0.31 eV for HR-2 and SS321 *** bubble density in HR-2 is greater than that in SS321 within whole measuring temperature range,and the onset temperature of rapid swelling is also *** is believed that the resistance of HR-2 to He is superior to that fo SS321.