The Al1.3FeCoNiCuCr HEA coatings are produced by pre-placed laser cladding on 45steel substrate. The influence of processing parameters on the crack formation of the HEA coatings is inves tigated, so is the influence of the content of so me other elements. The experiments results showed that: The microstructure of the Al1.3FeCoNiCuCr is composed of dendrite and inter-dendrite. The microstructure consists of only fcc and bcc phases. The crack density of the Al1.3FeCoNiCuCr HEA coatings is 0.533mm/mm2 when the parameter is 3000W and 350mm/min. It decreases to 0.464mm/mm2 when the parameter changes to 3500W and 250mm/min. In both cases, the cracks run throughout the surface of the coating with the slag inclusion adhesion. On the other hand, with a 2wt.% addition of RE2O3 to the Al1.3FeCoNiCuCr HEA, the crack density decreases to 0.433mm/mm2. Furthermore, the throughout crack disappear and there only have some micro cracks in the interior of the coatings.

Topics
Materials synthesis and processing, Crack formation
1.
Huang
KH
. MS thesis,
Department of Materials Science and Engineering
,
NTHU, Taiwan
;
1996
.
2.
Yeh
JW
,
Chen
SK
,
Lin
SJ
,
Gan
JY
,
Chin
TS
,
Shun
TT
, et al
Adv Eng Mater
2004
;
6
:
299
https://doi.org/10.1002/adem.200300567
Google Scholar
Crossref
Search ADS
 
3.
Yeh
JW
.
The Develop ment of High-Entropy Alloys
,
Hua Kang Journal of Eng ineering Chinese Culture University
27
(
2011
)
1
–
18
Google Scholar
 
4.
Tong
CJ
,
Chen
YL
,
Chen
SK
,
Yeh
JW
,
Shun
TT
,
Tsau
CH
, et al
Microstructure characterization of Alx CoCrCuFeNi high-entropy alloy system with multiprincipal elements
.
Metall Mater Trans A
2005
;
36
:
881
–
93
.
https://doi.org/10.1007/s11661-005-0283-0
Google Scholar
Crossref
Search ADS
 
5.
Chen
T K
,
Wong
MS
,
Shun
TT
,
Yeh
JW
.
Nanostructured nitride films of mult ie le ment high-entropy
6.
Li
C
,
Li
JC
,
Zhao
M
,
Jiang
Q.
Effect of alloying elements on microstructure and properties of multiprincipal elements high-entropy alloys
.
J Alloys Compd
2009
;
475
:
752
–
7
.
https://doi.org/10.1016/j.jallcom.2008.07.124
Google Scholar
Crossref
Search ADS
 
7.
Hui
Zhang
,
Ye
Pan
,
Yi-Zhu
He
,
Synthesis and characterization of FeCoNiCrCu high-entropy alloy coating by laser cladding
,
Materials and Design
32
(
2011
)
1910
–
1915
https://doi.org/10.1016/j.matdes.2010.12.001
Google Scholar
Crossref
Search ADS
 
8.
Xu
Jiale
,
Li
Zhongguo
,
Guo
Huafeng
,
Wang
Kai
,
Research Progress of Crack Defect in Laser Cladding Layer
,
Hot Working Technology
2013
,Vol.
42
,No.
8
Google Scholar
 
9.
Liu
Qibin
,
Zhu
Weidong
,
Chen
Jiang
,
A method of improving laser cladding Fe - based alloy coating on high temperature alloy
,
JOURNAL OF GUIZHOU UNIVERSITY OF TECHNOLOGY
Vol.
29
No.
5
October.
2000
Google Scholar
 
10.
Cha
ying
,
Zhou
changchi
,
Tang
Xinan
,
Zhang
Zhan
,
Study of improvement of Properties of Laser Cladding Ni Superalloy and WC Composite Layers
.
Chinese Journal of Lasers
, Vol.
A26
, No.
10
, October,
1999
Google Scholar
 
This content is only available via PDF.
© 2013 Laser Institute of America.
2013
Laser Institute of America
You do not currently have access to this content.