A kind of low density, super high specific yield strength mg-ni-ti-al quaternary alloy and preparation method thereof
A yield strength, quaternary alloy technology, applied in the field of multi-element alloy materials and their processing, can solve the problems of low absolute value of strength and low matrix strength
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Embodiment 1
[0044] A kind of low density, ultra-high specific yield strength Mg-Ni-Ti-Al quaternary alloy of the present embodiment, the chemical composition of described alloy is expressed as Mg by atomic ratio 1.9 NiTiAl 0.1 , the microstructure of the alloy is based on Mg 2 Ni is the parent phase, and a large number of nanoscale strengthening phases are dispersed in the alloy, and the strengthening phase is a B2-NiTi intermetallic compound; wherein: the density of the alloy is 3.24g / cm 3 , the average specific yield strength is 324MPa·cm 3 / g, the average hardness of the alloy is 3.15GPa.
[0045] The low-density, ultra-high specific yield strength Mg-Ni-Ti-Al quaternary alloy described above in this embodiment is prepared by the following method, and the steps are as follows:
[0046] (1) Material preparation:
[0047] The high-purity (above 3.5N) Mg, Ni, Ti and Al metal powders used have a uniform particle size and should be less than 48 μm (300 mesh). The process control agent i...
Embodiment 2
[0056] A kind of low density, ultra-high specific yield strength Mg-Ni-Ti-Al quaternary alloy of the present embodiment, the chemical composition of described alloy is expressed as Mg by atomic ratio 1.9 NiTiAl 0.1 , the microstructure of the alloy is based on Mg 2 Ni is the parent phase, and a large number of nanoscale strengthening phases are dispersed in the alloy, and the strengthening phase is a B2-NiTi intermetallic compound; wherein: the density of the alloy is 3.24g / cm 3 , the average specific yield strength is 312.2MPa·cm 3 / g, the average hardness of the alloy is 3.03GPa.
[0057] The low-density, ultra-high specific yield strength Mg-Ni-Ti-Al quaternary alloy described above in this embodiment is prepared by the following method, and the steps are as follows:
[0058] (1) Material preparation:
[0059] The high-purity (above 3.5N) Mg, Ni, Ti and Al metal powders used have a uniform particle size and should be less than 48 μm (300 mesh). The process control agent...
Embodiment 3
[0066] A kind of low density, ultra-high specific yield strength Mg-Ni-Ti-Al quaternary alloy of the present embodiment, the chemical composition of described alloy is expressed as Mg by atomic ratio 1.9 NiTiAl 0.1 , the microstructure of the alloy is based on Mg 2 Ni is the parent phase, and a large number of nanoscale strengthening phases are dispersed in the alloy, and the strengthening phase is a B2-NiTi intermetallic compound; wherein: the density of the alloy is 3.16g / cm 3 , the average specific yield strength is 326MPa·cm 3 / g, the average hardness of the alloy is 3.12GPa.
[0067] The low-density, ultra-high specific yield strength Mg-Ni-Ti-Al quaternary alloy described above in this embodiment is prepared by the following method, and the steps are as follows:
[0068] (1) Material preparation:
[0069] The high-purity (above 3.5N) Mg, Ni, Ti and Al metal powders used have a uniform particle size and should be less than 48 μm (300 mesh). The process control agent i...
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