热处理对Ti2AlNb 线性摩擦焊接头组织与硬度的影响

Jianchao He; Tiancang Zhang; Ju Li

doi:10.12073/j.hjxb.2019400111

热处理对Ti₂AlNb 线性摩擦焊接头组织与硬度的影响

Translated title of the contribution: Effect of heat treatment on microstructure and hardness of Ti₂AlNb linear friction welding joint

Jianchao He
, Tiancang Zhang
, Ju Li

China Aviation Industry Corporation

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

2 Scopus citations

Abstract

Linear friction welding (LFW) test and postweld heat treatment of welded joints of Ti₂AlNb alloy were carried out. The microstructure evolution in recrystallization zone and thermo-mechanical affected zone of Ti₂AlNb LFW joint with post heat treatment were analyzed. The results showed that high quality joint of Ti₂AlNb without microcrack and microvoid could be formed by LFW. WZ (weld zone) consisted of metastable β phase and few of twisted α₂. TMAZ was made of O phase, metastable β phase and much of twisted α₂ phase. After heat treatment, metastable β broke down into O lamina precipitate and the size of O lamina increased with the temperature from 700℃ to 900℃. Microhardness increased obviously after heat treatment at 700℃ while it decreased with the increasing of temperature.

Translated title of the contribution	Effect of heat treatment on microstructure and hardness of Ti₂AlNb linear friction welding joint
Original language	Chinese (Traditional)
Pages (from-to)	119-124
Number of pages	6
Journal	Hanjie Xuebao/Transactions of the China Welding Institution
Volume	40
Issue number	4
DOIs	https://doi.org/10.12073/j.hjxb.2019400111
State	Published - 25 Apr 2019
Externally published	Yes

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title = "热处理对Ti2AlNb 线性摩擦焊接头组织与硬度的影响",

abstract = "Linear friction welding (LFW) test and postweld heat treatment of welded joints of Ti2AlNb alloy were carried out. The microstructure evolution in recrystallization zone and thermo-mechanical affected zone of Ti2AlNb LFW joint with post heat treatment were analyzed. The results showed that high quality joint of Ti2AlNb without microcrack and microvoid could be formed by LFW. WZ (weld zone) consisted of metastable β phase and few of twisted α2. TMAZ was made of O phase, metastable β phase and much of twisted α2 phase. After heat treatment, metastable β broke down into O lamina precipitate and the size of O lamina increased with the temperature from 700℃ to 900℃. Microhardness increased obviously after heat treatment at 700℃ while it decreased with the increasing of temperature.",

keywords = "Heat treatment, Intermetallic compound, Linear friction welding, Microstructure",

author = "Jianchao He and Tiancang Zhang and Ju Li",

year = "2019",

month = apr,

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doi = "10.12073/j.hjxb.2019400111",

language = "繁体中文",

volume = "40",

pages = "119--124",

journal = "Hanjie Xuebao/Transactions of the China Welding Institution",

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publisher = "Harbin Research Institute of Welding",

number = "4",

}

TY - JOUR

T1 - 热处理对Ti2AlNb 线性摩擦焊接头组织与硬度的影响

AU - He, Jianchao

AU - Zhang, Tiancang

AU - Li, Ju

PY - 2019/4/25

Y1 - 2019/4/25

N2 - Linear friction welding (LFW) test and postweld heat treatment of welded joints of Ti2AlNb alloy were carried out. The microstructure evolution in recrystallization zone and thermo-mechanical affected zone of Ti2AlNb LFW joint with post heat treatment were analyzed. The results showed that high quality joint of Ti2AlNb without microcrack and microvoid could be formed by LFW. WZ (weld zone) consisted of metastable β phase and few of twisted α2. TMAZ was made of O phase, metastable β phase and much of twisted α2 phase. After heat treatment, metastable β broke down into O lamina precipitate and the size of O lamina increased with the temperature from 700℃ to 900℃. Microhardness increased obviously after heat treatment at 700℃ while it decreased with the increasing of temperature.

AB - Linear friction welding (LFW) test and postweld heat treatment of welded joints of Ti2AlNb alloy were carried out. The microstructure evolution in recrystallization zone and thermo-mechanical affected zone of Ti2AlNb LFW joint with post heat treatment were analyzed. The results showed that high quality joint of Ti2AlNb without microcrack and microvoid could be formed by LFW. WZ (weld zone) consisted of metastable β phase and few of twisted α2. TMAZ was made of O phase, metastable β phase and much of twisted α2 phase. After heat treatment, metastable β broke down into O lamina precipitate and the size of O lamina increased with the temperature from 700℃ to 900℃. Microhardness increased obviously after heat treatment at 700℃ while it decreased with the increasing of temperature.

KW - Heat treatment

KW - Intermetallic compound

KW - Linear friction welding

KW - Microstructure

UR - https://www.scopus.com/pages/publications/85070399471

U2 - 10.12073/j.hjxb.2019400111

DO - 10.12073/j.hjxb.2019400111

M3 - 文章

AN - SCOPUS:85070399471

SN - 0253-360X

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EP - 124

JO - Hanjie Xuebao/Transactions of the China Welding Institution

JF - Hanjie Xuebao/Transactions of the China Welding Institution

IS - 4

ER -

热处理对Ti₂AlNb 线性摩擦焊接头组织与硬度的影响

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