Crack Growth Rate Behavior of a Titanium-Aluminide Alloy During Isothermal and Nonisothermal ConditionsSource: Journal of Engineering Materials and Technology:;1995:;volume( 117 ):;issue: 001::page 118DOI: 10.1115/1.2804362Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Observations of isothermal fatigue, isothermal fatigue with superimposed load hold times, and thermomechanical fatigue (TMF) crack growth rate behavior of Ti-24Al-11Nb are presented and compared with results from previous studies on titanium and nickel-base superalloys. Elevated-temperature crack growth mechanisms in this alloy, which involve fatigue, oxidation and creep, and the influence of frequency, temperature, and hold-time are discussed. These mechanisms are used to interpret the observations of TMF crack growth. The limitations of current crack growth rate models based on the linear-elastic fracture mechanics parameter, K, are addressed.
keyword(s): Alloys , Fracture (Materials) , Titanium aluminide , Fatigue , Temperature , Mechanisms , Titanium , Nickel , Creep , Fracture mechanics , oxidation , Superalloys AND Stress ,
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contributor author | J. J. Pernot | |
contributor author | S. Mall | |
contributor author | T. Nicholas | |
date accessioned | 2017-05-08T23:47:24Z | |
date available | 2017-05-08T23:47:24Z | |
date copyright | January, 1995 | |
date issued | 1995 | |
identifier issn | 0094-4289 | |
identifier other | JEMTA8-26969#118_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/115437 | |
description abstract | Observations of isothermal fatigue, isothermal fatigue with superimposed load hold times, and thermomechanical fatigue (TMF) crack growth rate behavior of Ti-24Al-11Nb are presented and compared with results from previous studies on titanium and nickel-base superalloys. Elevated-temperature crack growth mechanisms in this alloy, which involve fatigue, oxidation and creep, and the influence of frequency, temperature, and hold-time are discussed. These mechanisms are used to interpret the observations of TMF crack growth. The limitations of current crack growth rate models based on the linear-elastic fracture mechanics parameter, K, are addressed. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Crack Growth Rate Behavior of a Titanium-Aluminide Alloy During Isothermal and Nonisothermal Conditions | |
type | Journal Paper | |
journal volume | 117 | |
journal issue | 1 | |
journal title | Journal of Engineering Materials and Technology | |
identifier doi | 10.1115/1.2804362 | |
journal fristpage | 118 | |
journal lastpage | 126 | |
identifier eissn | 1528-8889 | |
keywords | Alloys | |
keywords | Fracture (Materials) | |
keywords | Titanium aluminide | |
keywords | Fatigue | |
keywords | Temperature | |
keywords | Mechanisms | |
keywords | Titanium | |
keywords | Nickel | |
keywords | Creep | |
keywords | Fracture mechanics | |
keywords | oxidation | |
keywords | Superalloys AND Stress | |
tree | Journal of Engineering Materials and Technology:;1995:;volume( 117 ):;issue: 001 | |
contenttype | Fulltext |