Paper Title:
Temperature Dependence of Lattice Distortion in Strongly Creep-Deformed Single Crystal Superalloy SC16
  Abstract

Specimens of single crystal superalloy SC16 have been pre-deformed at 1223 K to strain of 15 % under tensile load of 150 MPa. The profiles of the 001 superlattice reflection of the γ’ precipitate phase as well as the profiles of the 002 reflections of the fcc matrix phase and of γ’-precipitate phase have been measured between RT and 1073 K by means of X-ray diffraction (XRD). From these measurements the lattice distortion of the γ’ precipitates and the lattice misfit between γ and γ’ phase have been determined as a function of temperature. The width of the 001 reflection as well as the lattice misfit decreased as a function of temperature. The results are ascribed to the anisotropic arrangement of dislocations at the γ/γ’ interfaces and to the different thermal expansion coefficients of the γ- and γ’-phase. A comparison of lattice misfit with previous measurements on moderately strained specimens suggests that the measured changes in lattice structure are predominantly created in stage I of creep-deformation.

  Info
Periodical
Materials Science Forum (Volumes 539-543)
Main Theme
Edited by
T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran
Pages
3048-3052
DOI
10.4028/www.scientific.net/MSF.539-543.3048
Citation
G. Schumacher, N. Darowski, I. Zizak, H. Klingelhöffer, W. Chen, W. Neumann, "Temperature Dependence of Lattice Distortion in Strongly Creep-Deformed Single Crystal Superalloy SC16", Materials Science Forum, Vols. 539-543, pp. 3048-3052, 2007
Online since
March 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Takayuki Takasugi, Yasuyuki Kaneno
Abstract:Dual multi-phase intermetallic alloy, which is composed of Ni3Al(L12) and Ni solid solution (A1) phases at high temperature annealing and is...
161
Authors: Vàclav Sklenička, Květa Kuchařová, Milan Svoboda, Ivan Saxl
Abstract:Critical high temperature components of machines and structures are often subjected to complicated load and temperature histories. The...
81
Authors: Zhi Xun Wen, Nai Xian Hou, Zhu Feng Yue
Abstract:Based on the microstructure change and damage characteristics of single crystal, a two-state-variable crystallographic creep damage...
1322
Authors: Li Hua Zhan, Yan Guang Li, Ming Hui Huang, Jian Guo Lin
Materials Processing Technology
Abstract:In order to study the similarities and dissimilarities between creep and stress relaxation behavior of age formed aluminum alloys, both creep...
772
Authors: Jürgen Malzbender, G. Pećanac, Stefan Baumann
Abstract:Ba0.5Sr0.5Co0.8Fe0.2O3 – δ is a mixed ion-electron conductor with high...
303