Effect of isothermal heat treatment on mechanical properties of WC-17Co coatings

Kunying Ding; Lijun Wang; Zhen Sun; Yankuan Liu

Effect of isothermal heat treatment on mechanical properties of WC-17Co coatings

Kunying Ding^*, Lijun Wang, Zhen Sun, Yankuan Liu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

WC-17Co cermet coatings were deposited on Ni718 alloys using the high-velocity oxygen fuel (HVOF) technique. These coatings were then heat treated by different processes (150℃, 10 h; 300℃, 10 h; 450℃, 10 h). The effects of heat treatment on microhardness, elasticity modulus, and fracture toughness were studied by an indentation method. The residual stresses of the coated specimens were evaluated by the Almen strip method. The results show that the phase constitution and the structure of the WC-17Co coatings exhibit no obvious change in 150, 300, and 450℃ heat-treatment. The microhardness, elasticity modulus, and fracture toughness of the WC-17Co coatings decrease with the increase of heat treatment temperature. The descent tendency of the mechanical properties is attributed to the decline in compressive residual stresses after isothermal heat treatment.

Original language	English
Pages (from-to)	2365-2369
Number of pages	5
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	43
Issue number	10
Publication status	Published - 1 Oct 2014
Externally published	Yes

Keywords

Compressive stress
Isothermal heat treatment
Mechanical property
WC-17Co

Cite this

@article{30cef59c69704b2d99174ef3e9d07c4d,

title = "Effect of isothermal heat treatment on mechanical properties of WC-17Co coatings",

abstract = "WC-17Co cermet coatings were deposited on Ni718 alloys using the high-velocity oxygen fuel (HVOF) technique. These coatings were then heat treated by different processes (150℃, 10 h; 300℃, 10 h; 450℃, 10 h). The effects of heat treatment on microhardness, elasticity modulus, and fracture toughness were studied by an indentation method. The residual stresses of the coated specimens were evaluated by the Almen strip method. The results show that the phase constitution and the structure of the WC-17Co coatings exhibit no obvious change in 150, 300, and 450℃ heat-treatment. The microhardness, elasticity modulus, and fracture toughness of the WC-17Co coatings decrease with the increase of heat treatment temperature. The descent tendency of the mechanical properties is attributed to the decline in compressive residual stresses after isothermal heat treatment.",

keywords = "Compressive stress, Isothermal heat treatment, Mechanical property, WC-17Co",

author = "Kunying Ding and Lijun Wang and Zhen Sun and Yankuan Liu",

year = "2014",

month = oct,

day = "1",

language = "English",

volume = "43",

pages = "2365--2369",

journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

issn = "1002-185X",

publisher = "Science Press",

number = "10",

}

TY - JOUR

T1 - Effect of isothermal heat treatment on mechanical properties of WC-17Co coatings

AU - Ding, Kunying

AU - Wang, Lijun

AU - Sun, Zhen

AU - Liu, Yankuan

PY - 2014/10/1

Y1 - 2014/10/1

N2 - WC-17Co cermet coatings were deposited on Ni718 alloys using the high-velocity oxygen fuel (HVOF) technique. These coatings were then heat treated by different processes (150℃, 10 h; 300℃, 10 h; 450℃, 10 h). The effects of heat treatment on microhardness, elasticity modulus, and fracture toughness were studied by an indentation method. The residual stresses of the coated specimens were evaluated by the Almen strip method. The results show that the phase constitution and the structure of the WC-17Co coatings exhibit no obvious change in 150, 300, and 450℃ heat-treatment. The microhardness, elasticity modulus, and fracture toughness of the WC-17Co coatings decrease with the increase of heat treatment temperature. The descent tendency of the mechanical properties is attributed to the decline in compressive residual stresses after isothermal heat treatment.

AB - WC-17Co cermet coatings were deposited on Ni718 alloys using the high-velocity oxygen fuel (HVOF) technique. These coatings were then heat treated by different processes (150℃, 10 h; 300℃, 10 h; 450℃, 10 h). The effects of heat treatment on microhardness, elasticity modulus, and fracture toughness were studied by an indentation method. The residual stresses of the coated specimens were evaluated by the Almen strip method. The results show that the phase constitution and the structure of the WC-17Co coatings exhibit no obvious change in 150, 300, and 450℃ heat-treatment. The microhardness, elasticity modulus, and fracture toughness of the WC-17Co coatings decrease with the increase of heat treatment temperature. The descent tendency of the mechanical properties is attributed to the decline in compressive residual stresses after isothermal heat treatment.

KW - Compressive stress

KW - Isothermal heat treatment

KW - Mechanical property

KW - WC-17Co

UR - http://www.scopus.com/inward/record.url?scp=84909998943&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:84909998943

SN - 1002-185X

VL - 43

SP - 2365

EP - 2369

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 10

ER -

Effect of isothermal heat treatment on mechanical properties of WC-17Co coatings

Abstract

Keywords

Other files and links

Fingerprint

Cite this