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OBSERVATIONS ON HIGH TEMPERATURE CREEP PROCESSES OF A NICKEL BASE ALLOY BY TRANSMISSION ELECTRON MICROSCOPY

KONG QING-PING ANG XIANG NI QUN-HUI

OBSERVATIONS ON HIGH TEMPERATURE CREEP PROCESSES OF A NICKEL BASE ALLOY BY TRANSMISSION ELECTRON MICROSCOPY

KONG QING-PING, ANG XIANG, NI QUN-HUI
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  • Received Date:  08 September 1984
  • Published Online:  31 March 2005

OBSERVATIONS ON HIGH TEMPERATURE CREEP PROCESSES OF A NICKEL BASE ALLOY BY TRANSMISSION ELECTRON MICROSCOPY

  • 1. 中国科学院固体物理研究所

Abstract: On the basis of the previous paper [1], dislocation structures in the primary and secondary stages of high temperature creep of a nickel base alloy (Ni80Cr20Ti) have been studied by transmission electron microscopy. The observations and analyses have been emphasized on the primary stage. It is shown that, in the primary stage of high temperature creep, a large number of individual dislocations are formed. They generally do not lie on the slip planes. The majority of them are shown to be mixed type dislocations. It is concluded that such kind of dislocations is a product of the combination of climbring of edge dislotions and cross slipping of screw dislocations.

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