Preparation of TiAl alloy powder by high-energy ball milling and diffusion reaction at low temperature

In this paper, TiAl alloy powders were prepared successfully by high-energy ball milling and diffusion reaction in vacuum at low temperature. The titanium powder, aluminum powder, and titanium hydride powder were used as raw materials. The samples were characterized by scanning electron microscopy（S...

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Bibliographic Details
Published inRare metals Vol. 37; no. 1; pp. 21 - 25
Main Authors Shao, Hui-Ping, Wang, Zhi, Lin, Tao, Ye, Qing, Guo, Zhi-Meng
Format Journal Article
LanguageEnglish
Published Beijing Nonferrous Metals Society of China 01.01.2018
Springer Nature B.V
Subjects
Alloy powders
Aluminum
Ball milling
Biomaterials
Chemistry and Materials Science
Diffusion
Electron microscopes
Emission analysis
Energy
Intermetallic compounds
Low temperature
Materials Engineering
Materials Science
Metal hydrides
Metallic Materials
Nanoscale Science and Technology
Physical Chemistry
Raw materials
Scanning electron microscopy
Thermal analysis
Titanium aluminides
Titanium base alloys
Titanium compounds
X-ray diffraction
合金粉末;TiAl;低温度;反应;精力;扫描电子显微镜;微分热分析;Ti-Al
Diffusion reaction
TiAl alloy powder
High-energy ball milling
Titanium hydride powder
Titanium powder
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Summary:In this paper, TiAl alloy powders were prepared successfully by high-energy ball milling and diffusion reaction in vacuum at low temperature. The titanium powder, aluminum powder, and titanium hydride powder were used as raw materials. The samples were characterized by scanning electron microscopy（SEM）, X-ray diffraction（XRD）, field-emission scanning electron microscopy（FESEM）, and differential thermal analysis（DTA）. The results show that the alloy powders with the main intermetallic compounds of TiAl are obtained using Ti-Al powders and TiH2-Al powders after heated for 2 h at 500 ℃,3 h at 600 ℃,and 3 h at 750 ℃,respectively.The average grain sizes of alloy powder are about 45 and20 μm with irregular shape, respectively. The prepared TiAl alloy powders are relatively pure, and the average quality content of oxygen in the alloy powders is0.33 wt%. The forming process of alloy powder contains both the diffusion reaction of Ti and Al,which gives priority to the diffusion reaction of aluminum.
Bibliography:High-energy ball milling Titanium hydride powder Titanium powder TiAl alloy powder Diffusion reaction
In this paper, TiAl alloy powders were prepared successfully by high-energy ball milling and diffusion reaction in vacuum at low temperature. The titanium powder, aluminum powder, and titanium hydride powder were used as raw materials. The samples were characterized by scanning electron microscopy（SEM）, X-ray diffraction（XRD）, field-emission scanning electron microscopy（FESEM）, and differential thermal analysis（DTA）. The results show that the alloy powders with the main intermetallic compounds of TiAl are obtained using Ti-Al powders and TiH2-Al powders after heated for 2 h at 500 ℃,3 h at 600 ℃,and 3 h at 750 ℃,respectively.The average grain sizes of alloy powder are about 45 and20 μm with irregular shape, respectively. The prepared TiAl alloy powders are relatively pure, and the average quality content of oxygen in the alloy powders is0.33 wt%. The forming process of alloy powder contains both the diffusion reaction of Ti and Al,which gives priority to the diffusion reaction of aluminum.
11-2112/TF
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-015-0466-9