Results 111 to 120 of about 68,122 (285)
Coating with overlay metallic-cermet alloy systems [PDF]
, 1984 A base layer of an oxide dispersed, metallic alloy (cermet) is arc plasma sprayed onto a substrate, such as a turbine blade, vane, or the like, which is subjected to high temperature use.
Gedwill, M. A. +2 more
core +1 more source
Advanced Science, Volume 13, Issue 25, 4 May 2026.This study demonstrates that in high‐alloy systems, nanoclusters with high solute tolerance can effectively suppress compositional segregation. This mitigation leads to a concurrent 18.7% increase in strength and 41.5% improvement in ductility, which is attributed to a shear‐bypass synergistic strengthening mechanism. The findings provide a new pathway
Wei Yu +10 more
wiley +1 more source
Deformation‐Induced Formation of Stray Grains in Additive Manufacturing of Single Crystals
Advanced Science, Volume 13, Issue 25, 4 May 2026.Stray grain formation severely limits the additive manufacturing of single‐crystal alloys. By integrating in situ synchrotron techniques, ex situ characterization, and multi‐scale multi‐physics modeling, the authors reveal that stray grains originate from dislocations at the solid‐liquid interface, rather than thermal supercooling in conventional ...
Dongsheng Zhang +11 more
wiley +1 more source
A History of Superalloy Metallurgy for Superalloy Metallurgists
Superalloys 1984 (Fifth International Symposium), 1984 This “history” is an attempt to tell their story. However, it is not intended to be simply a logical recording Iof the events that have transpired to create them, but is intended to be a technically and scientifically useful analysis through chronological treatment, based upon consideration of the development of their significant property factors, the ...
openaire +1 more source
steel research international, Volume 97, Issue 5, Page 2672-2692, May 2026.This work demonstrates that replacing Ti with Nb in maraging steel forms nanoscale Nb–Mo particles along boundaries, strengthening the alloy without relying on Ti phases. Heat‐treatment tuning promotes uniform crystal orientation and balanced grain boundaries, enabling strong yet ductile behavior.
Mohamad Masoumi +14 more
wiley +1 more source
Journal of Materials Research and TechnologyThe isothermal oxidation behavior of fourth-generation nickel-based single crystal superalloys with 2-4 wt% Mo content were studied at 900 °C and 1100 °C.At 1100 °C, the oxide layer can be divided into three layers, the outermost layer is Ni–Co oxide ...
Weiqi Li +8 more
doaj +1 more source
A status review of NASA's COSAM (Conservation Of Strategic Aerospace Materials) program [PDF]
The use and supply of strategic elements in nickel base superalloys for gas turbine engines are reviewed. Substitution of strategic elements, advanced processing concepts, and the identification of alternate materials are considered.
Stephens, J. R.
core +1 more source
Fiber Reinforced Superalloys [PDF]
, 1989 Improved performance of heat engines is largely dependent upon maximum cycle temperatures. Tungsten fiber reinforced superalloys (TFRS) are the first of a family of high temperature composites that offer the potential for significantly raising hot component operating temperatures and thus leading to improved heat engine performance.
DONALD W. PETRASEK +3 more
openaire +1 more source
Effects of Hold Time on the Elevated Temperature Fatigue Crack Growth Behavior of Alloy 247LC‐DS
Fatigue &Fracture of Engineering Materials &Structures, Volume 49, Issue 5, Page 1794-1808, May 2026.ABSTRACT Creep–fatigue crack growth (CFCG) experiments were performed at 850°C and 950°C on nominally 12.70‐mm‐thick compact‐type specimens of alloy 247LC‐DS, a Ni‐base superalloy. The loading cycles consisted of trapezoidal waveforms with hold times of 2 and 20 min at the maximum force.
Zachary B. Towner +5 more
wiley +1 more source
Fatigue &Fracture of Engineering Materials &Structures, Volume 49, Issue 5, Page 1742-1755, May 2026.ABSTRACT In the present study, creep tests of a TiAl alloy were conducted using miniature specimens (d = 2 mm) under various conditions to investigate their creep properties at 760°C. The test results indicate that creep rupture time obtained using miniature specimens at identical applied stress levels increase with the order of test condition Ar gas ...
Lei He, Takamoto Itoh, Noritake Hiyoshi
wiley +1 more source