Microstructure of laser cladding coating with pre-placed B4C and B4C + Ti powders on TC4 substrate

Hao Tian; Lin Geng; Dingrui Ni; Qingwu Meng

Microstructure of laser cladding coating with pre-placed B₄C and B₄C + Ti powders on TC4 substrate

Hao Tian^*
, Lin Geng
, Dingrui Ni
, Qingwu Meng

^*Corresponding author for this work

Harbin Institute of Technology

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

16 Scopus citations

Abstract

The microstructure of the laser cladding coating with pre-placed B₄C and B₄C + Ti powders on TC4 substrate was analyzed using XRD, SEM and EDS. The results showed that both the coatings consisted of TiB₂, TiB, TiC_1-x, and Ti phases. Some of Ti in the substrate was melted and mixed into the laser melting pool and reacted with B4C in-situ producing TiB, TiB₂ and TiC_1-x. The in-situ produced TiC_1-x shows morphology of dendrite. The in-situ produced TiB₂ shows morphology of whisker with larger size. The in-situ produced TiB shows morphology of whisker with smaller size. The bonding between the coating and TC4 alloy substrate was perfect. No crack and void were found at the interface. The heat-affected zone in the Ti substrate exhibited typical martensite morphology of quenched microstructure. Compared with B₄C cladding coating, the B₄C + 10wt%Ti cladding coating had a finer microstructure and higher content of TiB phase and lower content of the TiB₂ phase.

Original language	English
Pages (from-to)	420-423
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	36
Issue number	3
State	Published - Mar 2007
Externally published	Yes

Keywords

BC
In-situ synthesis
Laser cladding
Titanium alloy

Cite this

@article{30650a0cb09c4122ab4b900eeb6fda87,

title = "Microstructure of laser cladding coating with pre-placed B4C and B4C + Ti powders on TC4 substrate",

abstract = "The microstructure of the laser cladding coating with pre-placed B4C and B4C + Ti powders on TC4 substrate was analyzed using XRD, SEM and EDS. The results showed that both the coatings consisted of TiB2, TiB, TiC1-x, and Ti phases. Some of Ti in the substrate was melted and mixed into the laser melting pool and reacted with B4C in-situ producing TiB, TiB2 and TiC1-x. The in-situ produced TiC1-x shows morphology of dendrite. The in-situ produced TiB2 shows morphology of whisker with larger size. The in-situ produced TiB shows morphology of whisker with smaller size. The bonding between the coating and TC4 alloy substrate was perfect. No crack and void were found at the interface. The heat-affected zone in the Ti substrate exhibited typical martensite morphology of quenched microstructure. Compared with B4C cladding coating, the B4C + 10wt\%Ti cladding coating had a finer microstructure and higher content of TiB phase and lower content of the TiB2 phase.",

keywords = "BC, In-situ synthesis, Laser cladding, Titanium alloy",

author = "Hao Tian and Lin Geng and Dingrui Ni and Qingwu Meng",

year = "2007",

month = mar,

language = "英语",

volume = "36",

pages = "420--423",

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

issn = "1002-185X",

publisher = "Science Press ",

number = "3",

}

TY - JOUR

T1 - Microstructure of laser cladding coating with pre-placed B4C and B4C + Ti powders on TC4 substrate

AU - Tian, Hao

AU - Geng, Lin

AU - Ni, Dingrui

AU - Meng, Qingwu

PY - 2007/3

Y1 - 2007/3

N2 - The microstructure of the laser cladding coating with pre-placed B4C and B4C + Ti powders on TC4 substrate was analyzed using XRD, SEM and EDS. The results showed that both the coatings consisted of TiB2, TiB, TiC1-x, and Ti phases. Some of Ti in the substrate was melted and mixed into the laser melting pool and reacted with B4C in-situ producing TiB, TiB2 and TiC1-x. The in-situ produced TiC1-x shows morphology of dendrite. The in-situ produced TiB2 shows morphology of whisker with larger size. The in-situ produced TiB shows morphology of whisker with smaller size. The bonding between the coating and TC4 alloy substrate was perfect. No crack and void were found at the interface. The heat-affected zone in the Ti substrate exhibited typical martensite morphology of quenched microstructure. Compared with B4C cladding coating, the B4C + 10wt%Ti cladding coating had a finer microstructure and higher content of TiB phase and lower content of the TiB2 phase.

AB - The microstructure of the laser cladding coating with pre-placed B4C and B4C + Ti powders on TC4 substrate was analyzed using XRD, SEM and EDS. The results showed that both the coatings consisted of TiB2, TiB, TiC1-x, and Ti phases. Some of Ti in the substrate was melted and mixed into the laser melting pool and reacted with B4C in-situ producing TiB, TiB2 and TiC1-x. The in-situ produced TiC1-x shows morphology of dendrite. The in-situ produced TiB2 shows morphology of whisker with larger size. The in-situ produced TiB shows morphology of whisker with smaller size. The bonding between the coating and TC4 alloy substrate was perfect. No crack and void were found at the interface. The heat-affected zone in the Ti substrate exhibited typical martensite morphology of quenched microstructure. Compared with B4C cladding coating, the B4C + 10wt%Ti cladding coating had a finer microstructure and higher content of TiB phase and lower content of the TiB2 phase.

KW - BC

KW - In-situ synthesis

KW - Laser cladding

KW - Titanium alloy

UR - https://www.scopus.com/pages/publications/34248580150

M3 - 文章

AN - SCOPUS:34248580150

SN - 1002-185X

VL - 36

SP - 420

EP - 423

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

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

IS - 3

ER -

Microstructure of laser cladding coating with pre-placed B₄C and B₄C + Ti powders on TC4 substrate

Abstract

Keywords

Other files and links

Fingerprint

Cite this