The creating of nanostructure state in a cast nsupperalloy due to microalloying by lanthanum
Sidorov V.V., Rigin V.E., Zaysev D.V., Gorunov A.V. The creating of nanostructure state in a cast nsupperalloy due to microalloying by lanthanum // Proceedings of VIAM. 2013. No. 1. URL: https://test.viam.ru/en/journal/2013/1/1
Abstract
The nanotechnological process of microalloing VGM4-VI alloy by lanthanum was studed. As a result the addition of lanthanum is made to alloy, the high temperature properties improvement were achieved due to nanostructuried γ`-phase precipitating (partical sizes up to 100 nm) on interphase (γ/γ`)-phase boundaries. This is stabilizated the dislocation structure and hindered the movement of interphase dislocations at high temperature creep.