Grain Boundary Segregation Behavior of Ti14 Alloy after Semi-Solid State Deformation

Home > Archive>Volume 38, Issue 1, 2009 >42-45

Grain Boundary Segregation Behavior of Ti14 Alloy after Semi-Solid State Deformation
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                        Chen YongnanChen Yongnan
State Key Laboratory of Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China
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Wei JianfengWei Jianfeng
State Key Laboratory of Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710050, China
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Zhao YongqingZhao Yongqing
Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China
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Qu KepengQu Kepeng
State Key Laboratory of Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710050, China
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Wang HuiWang Hui
State Key Laboratory of Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710051, China
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Abstract:

The grain boundary segregation behavior of Ti14, a new typical α+Ti2Cu alloy, was investigated after semi-solid forging at different temperatures. The results reveal that Cu is segregated in grain boundary during semi-solid deformation and precipitated as Ti2Cu phase during the solidification. Temperature has effects on the microstructures of precipitates. A nucleation and precipitation model of Ti2Cu was raised to express the processing of nucleation and precipitation, which can be explained by a nonclassical nucleation and growth theory.

Key words:Ti14 alloy; semi-solid state deformation; grain boundary segregation

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[Chen Yongnan, Wei Jianfeng, Zhao Yongqing, Qu Kepeng, Wang Hui. Grain Boundary Segregation Behavior of Ti14 Alloy after Semi-Solid State Deformation[J]. Rare Metal Materials and Engineering,2009,38(1):42~45.]
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Received:January 10,2008
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