%0 Journal Article
%T MICROSTRUCTURES OF LASER SINTERED MICRON/ NANO-SIZED Cu-W POWDER<br>
%A GU Dongdong
%A SHEN Yifu
%A <br>
%J 金属学报
%D 2009
%I 
%X Effects of processing conditions on densification behavior and microstructural features of laser sintered micron/nano-sized C-W powder mixture were investigated. Reasonable increase in the laser power or decrease in the scan speed leads to a higher sintered density and a more homogeneous microstructure. Decreasing the scan line spacing to 0.15 mm improves the surface finish of the sintered component. Lowering the powder layer thickness to 0.15 mm yields a more coherent inter-layer bonding. Under the suitable processing conditions determined, the highest densification level reaches 95.2%. A series of regularly shaped W-ring/Cu-core structures are also formed in laser sintered component, and the forming mechanism was discussed.
%K laser sintering
%K W-Cu
%K microstructure
%K processing parameter<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=0BC3E2EFA29365696AF8A8BFB132E5C4&yid=DE12191FBD62783C&vid=94E7F66E6C42FA23&iid=CA4FD0336C81A37A&sid=A63576421B012172&eid=7F5DDA4924737DF5&journal_id=0412-1961&journal_name=金属学报&referenced_num=0&reference_num=32