Results 21 to 30 of about 346 (179)

Resource-efficient fracture-mechanical characterization of short cracks in additively manufactured titanium aluminides

Journal of Alloys and Metallurgical Systems
Titanium aluminides are gaining attention in the aerospace and automotive sectors due to their high-temperature resistance, low density, and favorable mechanical properties.
Niklas Kloos, Mirko Teschke, Selim Mrzljak, Alexander Koch, Frank Walther   +4 more
doaj   +1 more source

Devising Strain Hardening Models Using Kocks–Mecking Plots—A Comparison of Model Development for Titanium Aluminides and Case Hardening Steel

Metals, 2016
The present study focuses on the development of strain hardening models taking into account the peculiarities of titanium aluminides. In comparison to steels, whose behavior has been studied extensively in the past, titanium aluminides possess a much ...
Markus Bambach, Irina Sizova, Sebastian Bolz, Sabine Weiß   +3 more
doaj   +1 more source

Microstructure Design and Its Effect on Mechanical Properties in Gamma Titanium Aluminides

Metals, 2021
Intermetallic gamma titanium aluminides display attractive engineering properties at high temperatures of up to 750 °C. To date, they have been used in low-pressure turbine blades and turbocharger rotors in advanced aircraft and automotive engines.
Xuqi Liu, Qia Lin, Wenjing Zhang, Constance Van Horne, Limei Cha   +4 more
doaj   +1 more source

Investigating Fracture Behavior in Titanium Aluminides: Surface Roughness as an Indicator of Fracture Mechanisms in Ti-48Al-2Cr-2Nb Alloys

Metals
Titanium aluminides, particularly the Ti-48Al-2Cr-2Nb alloy, have drawn significant attention for their potential in high-temperature aerospace and automotive applications due to their exceptional performances and reduced density compared to nickel-based
Alessia Serena Perna, Lorenzo Savio, Michele Coppola, Fabio Scherillo   +3 more
doaj   +1 more source

Laser powder bed fusion of titanium aluminides: An investigation on site-specific microstructure evolution mechanism

Materials & Design, 2021
Metal additive manufacturing (AM) improves the design flexibility of titanium aluminides (TiAl-based alloys) as a new class of high-temperature alloys towards widespread applications.
Xing Zhang, Bo Mao, Leslie Mushongera, Julia Kundin, Yiliang Liao   +4 more
doaj   +1 more source

Boride formation behaviour and their effect on tensile ductility in cast TiAl-based alloys

Materials & Design, 2020
Boron has been used to refine the microstructures in TiAl castings, such as low-pressure turbine (LPT) blades, to improve mechanical properties. However, boride precipitates with undesirable morphologies could reduce ductility and even entirely remove ...
Jing Li, Spencer Jeffs, Mark Whittaker, Nigel Martin   +3 more
doaj   +1 more source

Consolidation Efficiency of Noncompact Alloys by Diamond Burnishing

Наука и техника, 2019
Active use of parts synthesized while using additive technologies from powders is limited due to presence of residual porosity contributing to a decrease in strength, ductility, fracture toughness, crack resistance, workability by cutting, as well as ...
E. V. Vishnepolskiy, D. V. Pavlenko
doaj   +1 more source

Effects of tailoring microstructure on short-term creep behavior of high Nb containing TiAl alloys under various stress levels

Journal of Materials Research and Technology, 2023
In this work, the short-term creep behaviors of high Nb containing TiAl alloys with different microstructure characteristics at 800 °C under a wide range of stresses of 150–350 MPa were investigated in detail. In order to tailor microstructure of high Nb
Zhenquan Liang, Shulong Xiao, Yi Shao, Dazhao Chi, Xinyi Li, Yunfei Zheng, Lijuan Xu, Xiang Xue, Jing Tian, Yuyong Chen   +9 more
doaj   +1 more source

Development of CALPHAD database for both Ti- and TiAl-based alloys [PDF]

MATEC Web of Conferences, 2020
Phase diagram calculations and phase transformation simulations have been widely employed to materials design and process optimization. Recent development of a 27-element thermodynamic database (TCTI2) together with a compatible mobility database (MOBTI3)
Yang Yang, Chen Hai-Lin, Chen Qing, Engström Anders   +3 more
doaj   +1 more source

The Influence of Field‐Assisted Sintering Technology (FAST) Temperature and Cooling Rate on the Microstructural Evolution in Gamma‐Titanium Aluminide Alloy GE4822

Advanced Engineering Materials, EarlyView.
Controlling the Field Assisted Sintering Technology (FAST) parameters, dwell temperature and cooling rate, significantly influences the microstructural evolution in titanium aluminide GE4822. Significant γ‐lamellar colonies develop only upon cooling through the α‐transus.
Jack Krohn, James Pepper, Martin Jackson
wiley   +1 more source