Containerless method of producing crack free metallic articles by energy beam deposition with reduced power density
摘要
A containerless method of producing a crack free metallic article of near-net shape includes melting a filler material into a metallic substrate or seed under conditions chosen to preclude cracking. In a preferred embodiment of the invention, a laser beam is operated at a relatively low power density and at a relatively large beam diameter at the substrate surface for an extended length of time to produce a molten pool with a low aspect ratio. Near-net shape is achieved by applying the process in a closed-loop, multi-axis material deposition system.
申请公布号
US5900170(A)
申请公布日期
1999.05.04
申请号
US19960620589
申请日期
1996.03.22
申请人
UNITED TECHNOLOGIES CORPORATION
发明人
MARCIN, JR., JOHN JOSEPH;NEUTRA, JUSTIN ANDREAS;ABBOTT, DAVID HENRY;ADUSKEVICH, JAMES PETER;SHAH, DILIP M.;CARRAWAY, DOROTHEA NADETTE;LANGEVIN, RAYMOND PAUL;SAUERHOEFER, MARC R.;STONE, RICHARD ALAN