LIQUID-COPPER ZINC EMBRITTLEMENT IN ALLOY-718

Authors
SHIH W KING J RACZKOWSKI C
Citation
W. Shih et al., LIQUID-COPPER ZINC EMBRITTLEMENT IN ALLOY-718, Welding journal, 77(6), 1998, pp. 219-222
Citations number
30
Categorie Soggetti
Metallurgy & Metallurigical Engineering
Journal title
Welding journal → ACNP
ISSN journal
00432296
Volume
77
Issue
6
Year of publication
1998
Pages
219 - 222
Database
ISI
SICI code
0043-2296(1998)77:6<219:LZEIA>2.0.ZU;2-T
Abstract
Welding of Alloy 718 is known to cause intergranular cracks in the wel d heat-affected zone (HAZ). In this work, an Alloy 718 sample that exh ibited HAZ cracking revealed high Cu/Zn concentrations on the fracture surface. Previous studies on HAZ cracking of Alloy 718 have not repor ted high Cu/Zn concentrations on the fracture surface. It is proposed here that the presence of liquid Cu/Zn can cause liquid-metal embrittl ement (LME) and HAZ cracking in Alloy 718.