4.6 Article

Improved Fracture Toughness of Polycrystalline γ-TiAl-Based Intermetallic Alloys with a Favorable Deformation Mechanism of Twinning

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Chemistry, Physical

Evolution of rapidly grown cellular microstructure during heat treatment of TiAl-based intermetallic and its effect on micromechanical properties

Shiqiu Liu et al.

Summary: The study investigated the phase and microstructure evolution of rapidly grown cellular microstructure of TiAl-based intermetallic during heat treatment, showing changes in structure at different temperatures. The micromechanical properties of the heat-treated microstructures were analyzed, showing that the nanohardness initially decreased then increased with temperature, reaching maximum at 700 degrees C. The microstructure with nanolamellae substructures proved to effectively strengthen and toughen TiAl-based alloys.

INTERMETALLICS (2021)

Article Materials Science, Multidisciplinary

Twin-boundary assisted crack tip plasticity and toughening in lamellar γ-TiAl

Anupam Neogi et al.

Summary: The study highlights the influence of internal twin-boundaries in lamellar gamma-TiAl alloys on crack advancement, with a focus on the propagation direction and dislocation emission at the crack tip. Different twin boundaries play distinct roles in crack propagation, contributing to the toughening of the material.

ACTA MATERIALIA (2021)

Article Materials Science, Multidisciplinary

Interlamellar boundaries govern cracking

Shitan Yan et al.

Summary: In contrast to previous studies on cracking behaviors in lamellar materials, a new phenomenon has been discovered in PST TiAl single crystals showing that specimens with crack divider have higher toughness than those with crack arrester. This difference is attributed to the coherency of interlamellar boundaries, where coherent boundaries suppress delamination and promote crack propagation in a different direction. The study introduces a toughness ratio to evaluate cracking behavior based on boundary coherency levels, shedding light on the relationship between interlamellar boundaries and crack propagation for the development of lamellar materials.

ACTA MATERIALIA (2021)

Article Nanoscience & Nanotechnology

Remarkable improvement in tensile strength of a polycrystalline γ-TiAl-based intermetallic alloy by deformation nanotwins

Shiqiu Liu et al.

Summary: The microstructural refinement using deformation nanotwins can significantly improve the tensile strength of TiAl-based alloy. The generation of high-density deformation nanotwins can effectively strengthen the material by relieving stress concentration and improving the work-hardening rate during tension, thus keeping the work-hardening rate stable.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2021)

Article Nanoscience & Nanotechnology

Microstructural evolution and mechanical properties of a Cr-rich β-solidifying TiAl-based alloy prepared by electromagnetic cold crucible continuous casting

Shiqiu Liu et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2020)

Article Nanoscience & Nanotechnology

Effects of lamellar orientation on the fracture toughness of TiAl PST crystals

Yongzhe Wang et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2019)

Article Materials Science, Multidisciplinary

The Relationship between Strength and Toughness in Tempered Steel: Trade-Off or Invariable?

He-Fei Li et al.

ADVANCED ENGINEERING MATERIALS (2019)

Article Materials Science, Multidisciplinary

Hot deformation processing capability of Fe-contained high Nb TiAl-based alloy

Shulin Dong et al.

VACUUM (2019)

Article Nanoscience & Nanotechnology

Fracture toughness of a lamellar orientation-controlled TiAl-based alloy processed by either one-step or two-step compression at high temperature

Makoto Hasegawa et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2018)

Article Nanoscience & Nanotechnology

Microscale mechanical properties of ultra-high-strength polysynthetic TiAl-Ti3Al single crystals

D. P. Wang et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2018)

Article Chemistry, Physical

Structural stability and the alloying effect of TiB polymorphs in TiAl alloys

B. G. Liu et al.

INTERMETALLICS (2017)

Article Materials Science, Multidisciplinary

TiAl alloys in commercial aircraft engines

B. P. Bewlay et al.

MATERIALS AT HIGH TEMPERATURES (2016)

Article Chemistry, Physical

Polysynthetic twinned TiAl single crystals for high-temperature applications

Guang Chen et al.

NATURE MATERIALS (2016)

Review Materials Science, Multidisciplinary

Modeling concepts for intermetallic titanium aluminides

F. Appel et al.

PROGRESS IN MATERIALS SCIENCE (2016)

Article Nanoscience & Nanotechnology

Microstructure characterization, mechanical properties and toughening mechanism of TiB2-containing conventional cast TiAl-based alloy

Jianchao Han et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2015)

Proceedings Paper Materials Science, Multidisciplinary

Wrought TiAl blades

P. Janschek

MATERIALS TODAY-PROCEEDINGS (2015)

Review Materials Science, Multidisciplinary

Design, Processing, Microstructure, Properties, and Applications of Advanced Intermetallic TiAl Alloys

Helmut Clemens et al.

ADVANCED ENGINEERING MATERIALS (2013)

Article Nanoscience & Nanotechnology

Generalized planar fault energies and mechanical twinning in gamma TiAl alloys

Y. F. Wen et al.

SCRIPTA MATERIALIA (2013)

Article Chemistry, Physical

The conflicts between strength and toughness

Robert O. Ritchie

NATURE MATERIALS (2011)

Article Materials Science, Multidisciplinary

The relationship between fracture toughness and microstructure of fully lamellar TiAl alloy

R. T. Zheng et al.

JOURNAL OF MATERIALS SCIENCE (2007)

Review Chemistry, Physical

Reassessment of the binary aluminum-titanium phase diagram

Julius C. Schuster et al.

JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION (2006)

Article Chemistry, Physical

Review of alloy and process development of TiAl alloys

Xinhua Wu

INTERMETALLICS (2006)

Article Materials Science, Multidisciplinary

Effect of internal stresses on the fracture toughness of a TiAl-based alloy with duplex microstructures

FA Guo et al.

ACTA MATERIALIA (2003)

Article Materials Science, Multidisciplinary

Hardness and modulus of the lamellar microstructure in PST-TiAl studied by nanoindentations and AFM

M Göken et al.

ACTA MATERIALIA (2001)