skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: In situ characterization of residual stress evolution during heat treatment of SiC/SiC ceramic matrix composites using high-energy X-ray diffraction

Journal Article · · Journal of the American Ceramic Society
DOI:https://doi.org/10.1111/jace.17493· OSTI ID:1776625
ORCiD logo [1];  [2]; ORCiD logo [2];  [3];  [4];  [1];  [1]
  1. Purdue Univ., West Lafayette, IN (United States)
  2. Air Force Research Lab. (AFRL), Wright-Patterson AFB, OH (United States)
  3. Advanced Photon Source Argonne National Laboratory Lemont IL USA
  4. Rolls‐Royce Corp., Indianapolis, IN (United States)

Abstract Volumetric strains were measured in silicon carbide/silicon carbide melt‐infiltrated ceramic matrix composites (CMCs) at ambient and high temperatures using high‐energy synchrotron X‐ray diffraction (XRD). Both silicon and silicon carbide constituents were interrogated utilizing a broad spectrum of diffracting planes that would be largely inaccessible to common laboratory XRD equipment. Residual room‐temperature principal strains in the melt‐infiltrated silicon phase were found to be approximately 1100  με in compression, corresponding to stresses of approximately 300 MPa using simplifying constitutive assumptions. Residual room‐temperature principal strains in silicon carbide particles found throughout the matrix were approximately 500  με in tension, corresponding to approximately 300 MPa. Residual strains were found to decrease considerably as temperatures increased from ambient temperature to 1250°C. Residual strains returned to approximately preheat treatment values after cool‐down to ambient temperature. Strain measurements in the silicon phase were found to be significantly affected by dissolved boron dopant levels causing contraction of the silicon lattice. This contraction must be accounted for in high‐temperature experiments for accurate calculation of stresses in the silicon phase.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1776625
Alternate ID(s):
OSTI ID: 1787129
Journal Information:
Journal of the American Ceramic Society, Vol. 104, Issue 3; ISSN 0002-7820
Publisher:
American Ceramic SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (31)

Damage Mechanisms and the Mechanical Properties of a Laminated 0/90 Ceramic/Matrix Composite journal December 1992
Lattice parameter study of silicon uniformly doped with boron and phosphorus journal May 1974
Thermal Expansion of the Hexagonal (6H) Polytype of Silicon Carbide journal December 1986
Microstress in Reaction-Bonded SiC from Crystallization Expansion of Silicon journal July 2016
Thermal residual stresses in ceramic matrix composites—I. Axisymmetrical model and finite element analysis journal June 1995
Material Properties of a Sintered α-SiC journal September 1997
Relaxation of residual microstress in reaction bonded silicon carbide journal July 2018
Stress-dependent matrix cracking in 2D woven SiC-fiber reinforced melt-infiltrated SiC matrix composites journal July 2004
Study of thermal residual stresses in ceramic matrix composites journal August 1997
In situ imaging and strain determination during fracture in a SiC/SiC ceramic matrix composite journal October 2013
Residual Stress-Related Common Intersection Points in the Mechanical Behavior of Ceramic Matrix Composites Undergoing Cyclic Loading journal January 2013
Residual Stress Analysis of Multilayer Environmental Barrier Coatings journal February 2009
Residual stress determination of silicon containing boron dopants in ceramic matrix composites journal October 2018
Non-Destructive Characterization of Engineering Materials Using High-Energy X-rays at the Advanced Photon Source journal May 2017
Die Konstitution der Mischkristalle und die Raumf�llung der Atome journal January 1921
Acoustic emission and electrical resistance in SiC-based laminate ceramic composites tested under tensile loading journal October 2017
Ultra-shallow junctions produced by plasma doping and flash lamp annealing journal December 2004
Thermal expansion of some diamondlike crystals journal January 1975
Electrical Resistance of SiC Fiber Reinforced SiC/Si Matrix Composites at Room Temperature during Tensile Testing journal September 2013
Measurement of Young's Modulus of Silicon Single Crystal at High Temperature and Its Dependency on Boron Concentration Using the Flexural Vibration Method journal February 2000
Determination of the Si Young's modulus between room and melt temperature using the impulse excitation technique: Determination of the Si Young's modulus between room and melt temperature using the impulse excitation technique journal December 2013
Determination of the lattice contraction of boron‐doped silicon journal January 1993
What is the Young's Modulus of Silicon? journal April 2010
Determination of the Avogadro constant via the silicon route journal September 2003
The use of high energy X-rays from the Advanced Photon Source to study stresses in materials journal June 2005
Stress and doping uniformity of laser crystallized amorphous silicon in thin film silicon solar cells journal March 2010
Dissolution kinetics of B clusters in crystalline Si journal December 2005
Precise determination of lattice parameter and thermal expansion coefficient of silicon between 300 and 1500 K journal July 1984
Measurement and calculation of thermal residual stress in fiber reinforced ceramic matrix composites journal December 2008
Measuring the effects of heat treatment on SiC/SiC ceramic matrix composites using Raman spectroscopy journal September 2019
Thermal residual stresses in ceramic matrix composites—II. Experimental results for model materials journal June 1995