Superalloys : Analysis and Control of Failure Process

Superalloys form a class of the structural materials for high-temperature applications. Nickel superalloys are extensively used in the high-temperature components of gas turbines due to their excellent creep, fatigue, and corrosion resistance at elevated temperatures. These materials are considered paramagnetic in the range of working temperatures. This book presents the features of the ternary phase diagrams Ni-Al-X (X = {Co, Fe, Nb, Ti, Cr}), effects of the alloying on the long-range order and mechanical properties of the Ni3 Al-based alloys.

Description of the strain-induced ferromagnetism in the Ni3Al-based alloys and magnetic control of the failure of gas turbine blades are also included. A separate section is devoted to the analysis of the vibration process and strength change in the single-crystal gas turbine blades.

This book includes the review of the new intermetallic cobalt superalloys. The structure, crystal lattice parameters, orientation relationships between phases, mechanical and magnetic properties of the Co3(Al,W)-based alloys are described.

Non-destructive magnetic point control of the martensite content in low-magnetic austenitic alloys is a new method for detection of the local sites with internal stresses. This method is useful for the detection of the residual stress in the critical parts of industrial products.

This book may be useful for specialists in material science, first-year postgraduate students taking a class in material science and engineering, and engineers developing new alloys for the gas turbine technology.

Nataliya V. Kazantseva is chief researcher, professor, Doctor of Sciences in physics and mathematics. She is a specialist in the TEM study of the structure and phase transformations in the alloys and intermetallic compounds. She has a Best Publication Diploma from Pleiades Publishing, Inc. and Russian Academy of Sciences, 1996. In 2010 and 2013, she took part in the international exchange Program for the best scientists of USA and Russian Federation. She is the author of over 80 scientific works.

Natalia N. Stepanova is leading researcher, professor, Doctor of Sciences in physics and mathematics. She is a specialist in the structural and phase transformations in Ni3Al-base alloys and nickel super alloys. She also works in collaboration with industry and studies the structure and phase stability of the modern nickel super alloys. Natalia N. Stepanova is the author of over 130 scientific works, including two collective monographs.

Mikhail B. Rigmant is senior researcher, Professor, PhD in physics and mathematics. He is a member of the Russian Society for Non-Destructive Testing and Technical Diagnostics and of the Bulgarian Society for Non-Destructive Testing (BG S NDT). He has specialized in the magnetic non-destructive testing of the phase composition and structure of the austenitic steel and alloys. He is an author of 7 RF Patents and of over 70 scientific works.

Yurii S. Vorobiov is leading researcher, Professor, Doctor of Technical Sciences. He is a member of the Ukrainian National Committee on Theoretical and Applied Mechanics, Member of Technical Committee Rotor Dynamics of IFFToMM, Academic of Ukraine Universities Academy, Academic of Ukraine Engineering Academy. In 1984 he received the State Prize of Ukraine in the field of science and technology. He was awarded the Order “Badge of Honor” and a number of medals. In 2016 he was awarded the Yaroslav Mudry Award of the University Academy of Ukraine. He is the author of over 550 scientific works.