THE APB ENERGIES OF Ni_(74.5)Pd_2Al_(23.5) ALLOY WITH L1_2 STRUCTURE

Acta Metall Sin

1997, Vol. 33

Issue (11): 1130-1134 DOI:

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THE APB ENERGIES OF Ni_(74.5)Pd_2Al_(23.5) ALLOY WITH L1_2 STRUCTURE

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SUN Jian(The Public Laboratory of State Education Commission.for High Temperature Materials and High Temperature Tests;Shanghai Jiaotong University; Shanghai 200030); C. S. Lee; J. K. L. Lai(City University of Hong Kong; Hong Kong). THE APB ENERGIES OF Ni_(74.5)Pd_2Al_(23.5) ALLOY WITH L1_2 STRUCTURE. Acta Metall Sin, 1997, 33(11): 1130-1134.

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Abstract Using the TEM weak beam technigue,the APB energies on the (111) and (100) planes of Ni74.5Pd2A123.5 alloy with L12 structure were determined to be(144±20) mJ / m2 and (102±11) mJ/m2 respectively.The relation of ordering energies on the ductility of the alloy was also discussed in this paper.

Key words: APB energy Ni_3Al intermetallic compound TEM weak beam technique

Received: 18 November 1997

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1997/V33/I11/1130

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