Effect of aging on microstructure and wear resistance of Ti-55511/BN composite coating

Rui Chen; Huaming Wang; Bei He; Xu Cheng; Dong Liu

doi:10.1080/02670844.2020.1840697

Effect of aging on microstructure and wear resistance of Ti-55511/BN composite coating

Rui Chen
, Huaming Wang
, Bei He
, Xu Cheng
, Dong Liu

Beihang University

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

1 Scopus citations

Abstract

In situ synthesized TiN and TiB reinforced metal matrix composite coating was fabricated on Ti-55511 by laser cladding with Ti-55511/BN powder mixture (2 wt-% BN). Results indicated that coating was mainly composed of TiB, dendrite TiN and α phase. The diameter of small-sized hollow tubular TiB was less than 400 nm, and the width of the other rod-shaped TiB was less than 1 μm. The flower-like structure formed during solidification consisted of TiN dendrite in centre and rod-shaped or hollow tubular TiB at edge. Coating had high hardness (540 HV) due to formation of TiB and TiN. After direct aging (600°C/5 h/AC), the hardness of coating and HAZ increased to 660 and 450 HV respectively because of nano-scaled α phase precipitation. In the friction and wear test, the weight loss of the coating was only 62% of that of substrate, which further reduced to 47% after aging.

Original language	English
Pages (from-to)	712-721
Number of pages	10
Journal	Surface Engineering
Volume	37
Issue number	6
DOIs	https://doi.org/10.1080/02670844.2020.1840697
State	Published - 2021
Externally published	Yes

Keywords

Laser cladding
coating
microstructure
titanium alloy
wear

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10.1080/02670844.2020.1840697

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title = "Effect of aging on microstructure and wear resistance of Ti-55511/BN composite coating",

abstract = "In situ synthesized TiN and TiB reinforced metal matrix composite coating was fabricated on Ti-55511 by laser cladding with Ti-55511/BN powder mixture (2 wt-\% BN). Results indicated that coating was mainly composed of TiB, dendrite TiN and α phase. The diameter of small-sized hollow tubular TiB was less than 400 nm, and the width of the other rod-shaped TiB was less than 1 μm. The flower-like structure formed during solidification consisted of TiN dendrite in centre and rod-shaped or hollow tubular TiB at edge. Coating had high hardness (540 HV) due to formation of TiB and TiN. After direct aging (600°C/5 h/AC), the hardness of coating and HAZ increased to 660 and 450 HV respectively because of nano-scaled α phase precipitation. In the friction and wear test, the weight loss of the coating was only 62\% of that of substrate, which further reduced to 47\% after aging.",

keywords = "Laser cladding, coating, microstructure, titanium alloy, wear",

author = "Rui Chen and Huaming Wang and Bei He and Xu Cheng and Dong Liu",

note = "Publisher Copyright: {\textcopyright} 2020 Institute of Materials, Minerals and Mining Published by Taylor \& Francis on behalf of the Institute.",

year = "2021",

doi = "10.1080/02670844.2020.1840697",

language = "英语",

volume = "37",

pages = "712--721",

journal = "Surface Engineering",

issn = "0267-0844",

publisher = "SAGE Publications Ltd",

number = "6",

}

TY - JOUR

T1 - Effect of aging on microstructure and wear resistance of Ti-55511/BN composite coating

AU - Chen, Rui

AU - Wang, Huaming

AU - He, Bei

AU - Cheng, Xu

AU - Liu, Dong

PY - 2021

Y1 - 2021

N2 - In situ synthesized TiN and TiB reinforced metal matrix composite coating was fabricated on Ti-55511 by laser cladding with Ti-55511/BN powder mixture (2 wt-% BN). Results indicated that coating was mainly composed of TiB, dendrite TiN and α phase. The diameter of small-sized hollow tubular TiB was less than 400 nm, and the width of the other rod-shaped TiB was less than 1 μm. The flower-like structure formed during solidification consisted of TiN dendrite in centre and rod-shaped or hollow tubular TiB at edge. Coating had high hardness (540 HV) due to formation of TiB and TiN. After direct aging (600°C/5 h/AC), the hardness of coating and HAZ increased to 660 and 450 HV respectively because of nano-scaled α phase precipitation. In the friction and wear test, the weight loss of the coating was only 62% of that of substrate, which further reduced to 47% after aging.

AB - In situ synthesized TiN and TiB reinforced metal matrix composite coating was fabricated on Ti-55511 by laser cladding with Ti-55511/BN powder mixture (2 wt-% BN). Results indicated that coating was mainly composed of TiB, dendrite TiN and α phase. The diameter of small-sized hollow tubular TiB was less than 400 nm, and the width of the other rod-shaped TiB was less than 1 μm. The flower-like structure formed during solidification consisted of TiN dendrite in centre and rod-shaped or hollow tubular TiB at edge. Coating had high hardness (540 HV) due to formation of TiB and TiN. After direct aging (600°C/5 h/AC), the hardness of coating and HAZ increased to 660 and 450 HV respectively because of nano-scaled α phase precipitation. In the friction and wear test, the weight loss of the coating was only 62% of that of substrate, which further reduced to 47% after aging.

KW - Laser cladding

KW - coating

KW - microstructure

KW - titanium alloy

KW - wear

UR - https://www.scopus.com/pages/publications/85095766779

U2 - 10.1080/02670844.2020.1840697

DO - 10.1080/02670844.2020.1840697

M3 - 文章

AN - SCOPUS:85095766779

SN - 0267-0844

VL - 37

SP - 712

EP - 721

JO - Surface Engineering

JF - Surface Engineering

IS - 6

ER -

Effect of aging on microstructure and wear resistance of Ti-55511/BN composite coating

Abstract

Keywords

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