AN IMPROVEMENT OF ROOM TEMPERATURE DUCTILITY OF Ni_3Al(B)-Cr BASE ALLOYS BY MULTI-ALLOYING OF Mg AND RE

Acta Metall Sin

1994, Vol. 30

Issue (5): 221-224 DOI:

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AN IMPROVEMENT OF ROOM TEMPERATURE DUCTILITY OF Ni_3Al(B)-Cr BASE ALLOYS BY MULTI-ALLOYING OF Mg AND RE

XU Songbo；CHEN Junming (Shanghai Institute of Metallurgy; Chinese Academy of Sciences)(Manuscript received 5 July; 1993; in revised form 6 September 1993)

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XU Songbo；CHEN Junming (Shanghai Institute of Metallurgy; Chinese Academy of Sciences)(Manuscript received 5 July; 1993; in revised form 6 September 1993). AN IMPROVEMENT OF ROOM TEMPERATURE DUCTILITY OF Ni_3Al(B)-Cr BASE ALLOYS BY MULTI-ALLOYING OF Mg AND RE. Acta Metall Sin, 1994, 30(5): 221-224.

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Abstract The tensile properties of two-phase (γ＋γ＇) Ni_3Al(B)-Cr base alloys containing Zr, Mg and RE have been studied. Experiments show that Ni_3Al(B)-Cr-Mg-RE alloy as compared with Ni_3Al(B)-Cr-Zr alloy, the yield strength does not decrease, the mopohology is changed from bulky irregular γ＇- phases to fine spherical γ＇- phases and the percentage of elongation is increased about 20%. Correspondent: CHEN Junming, professor, Shanghai institute of Metallurgy, Chinese Academy of Sciences, Shanghai 200050

Key words: Ni_3Al(B)-Cr base alloy multi-microalloying γ＋γ＇phases room temperature ductility Mg rare earth elements

Received: 18 May 1994

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