Effect of Mo Element on Microstructure and Mechanical Properties of TiAl Alloys

QC 20221025
Four TiAl alloys with different Mo contents were designed, and the microstructure and mechanical properties of these MoTiAl alloys were studied by scanning electron microscope, nanoindentation, and hot compression simulation methods. Results show that with increasing the Mo content, the content of. phase is gradually decreased, while that of beta phase is gradually increased. The Mo element mainly exists in the form of beta phase in the TiAl alloy. During the hot isostatic pressing process, the Mo element is diffused from the. and a 2 phases to the beta phase. The nanoindentation hardness of Mo-TiAl alloy reaches the maximum when the Mo content is 1.59at%, and it is negatively correlated with the interlamellar space. As the content of Mo element increases, the flow stress of Mo-TiAl alloys decreases, and the TiAl alloys with 2.11at% and 3.94at% Mo addtion have poor plasticity due to the Al element segregation.

TEKNIK OCH TEKNOLOGIER Materialteknik Annan materialteknik hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering Other Materials Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Materialteknik Metallurgi och metalliska material hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering Metallurgy and Metallic Materials hsv//eng
microstructure
Mo element
nanoindentation
segregation
TiAl alloy
Aluminum alloys
Binary alloys
Hot isostatic pressing
Molybdenum alloys
Scanning electron microscopy
Segregation (metallography)
Ternary alloys
Titanium alloys
Hot compression simulation
Hot-isostatic pressings
Microstructures and mechanical properties
Mo content
Nano indentation
Nano-indentation hardness
Scanning electrons

Ingår i:Xiyou jinshu cailiao yu gongcheng: NORTHWEST INST NONFERROUS METAL RESEARCH51:7, s. 2336-23431002-185X

Av författaren/redakt...: Shiwei, Tian; Anrui, He; Jianhua, Liu; Yefei, Zhang; Yun, Zhang; Yang, Yonggang; visa fler...; Jiayi, Wang; Haitao, Jiang; visa färre...

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TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Materialteknik; och Annan materialte ...

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Materialteknik; och Metallurgi och m ...

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