%0 Journal Article
%T EFFECT OF TRACE ELEMENT B ON MICROSTRUCTURE OF DIRECTIONALLY SOLIDIFIED Co-BASE SUPER ALLOY DZX40M
%A SUN LilingInstitute of Metal Research
%A Chinese Academy of Sciences
%A Shenyang
%A ChinaWU QiShenyang College of Technology
%A Shenyang
%A ChinaZHANG Zhiya
%A HU ZhuangqiInstitute of Metal Research
%A Chinese Academy of Sciences
%A Shenyang
%A China
%A <br>SUN LilingInstitute of Metal Research
%A Chinese Academy of Sciences
%A Shenyang
%A ChinaWU QiShenyang College of Technology
%A Shenyang
%A ChinaZHANG Zhiya
%A HU ZhuangqiInstitute of Metal Research
%A Chinese Academy of Sciences
%A Shenyang
%A China
%J 金属学报(英文版)
%D 1994
%I 
%X The effect of trace element B on microstructure of directionally slidified new type Co-base superalloy is studied systematically in this paper.It is found that the addition of B makes the incipient melting temperature of the alloy decline remarkably.Compared withthe alloy having a boron contenl of 0.05%,the incipient melting temperature of the alloywith 0.7% B decreases by 197℃.The primary and secondary dendrite arm spacings in-crease and the volume fraction of interdendritic carbides with fine microstructure becomesbigger with the enhancement of boron content.When the alloy is with 0.7wt%B,M_3B_2 precipitates in the interdendrites.
%K horon
%K directional solidification
%K Co-base superalloy
%K DZX40M<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=CD6F58E1AD05547281C02C6E5B0A7127&yid=3EBE383EEA0A6494&vid=DF92D298D3FF1E6E&iid=CA4FD0336C81A37A&sid=EA389574707BDED3&eid=96C778EE049EE47D&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=6