Author: Michael Francis Stevens
Publisher:
ISBN:
Category :
Languages : en
Pages : 187
Book Description
The general hydrogen embrittlement susceptibility of a titanium-bearing HSLA steel has been characterized and correlated with detailed transmission electron and field ion microscopic studies of various microstructures. The hydrogen permeability and trapping in the same microstructures has also been studied through the use of electrochemical polarization and potentiostatic detection. The trapping character of the various microstructures has been determined by comparison with the TEM and FIM results. Hydrogen embrittlement susceptibility has been determined by the use of cathodically precharged cylindrical tensile specimens and hydrogen induced cracking of double cantilever beam type fracture mechanics specimens. The hydrogen permeability studies showed that austenitized and quenched microstructures were composed of essentially low interaction energy reversible trap sites for hydrogen including but not restricted to grain boundaries, solute elements and dislocations. Aging at temperatures between 400 deg C and 500 deg C still resulted in a reversible trap population, although the character of trapping was inferred to have shifted to higher capture-to-release rates from examination of the form of the transient hydrogen exit flux. The introduction of cementite in these microstructures was assumed to be responsible. At aging temperatures of 600 deg c and higher, irreversible trapping of hydrogen was found to occur concurrently with the direct precipitation of the alloy carbide, TiC.
Effect of Microstructure and Trapping on the Hydrogen Embrittlement Susceptibility of a Ti-Bearing HSLA Steel
Author: Michael Francis Stevens
Publisher:
ISBN:
Category :
Languages : en
Pages : 187
Book Description
The general hydrogen embrittlement susceptibility of a titanium-bearing HSLA steel has been characterized and correlated with detailed transmission electron and field ion microscopic studies of various microstructures. The hydrogen permeability and trapping in the same microstructures has also been studied through the use of electrochemical polarization and potentiostatic detection. The trapping character of the various microstructures has been determined by comparison with the TEM and FIM results. Hydrogen embrittlement susceptibility has been determined by the use of cathodically precharged cylindrical tensile specimens and hydrogen induced cracking of double cantilever beam type fracture mechanics specimens. The hydrogen permeability studies showed that austenitized and quenched microstructures were composed of essentially low interaction energy reversible trap sites for hydrogen including but not restricted to grain boundaries, solute elements and dislocations. Aging at temperatures between 400 deg C and 500 deg C still resulted in a reversible trap population, although the character of trapping was inferred to have shifted to higher capture-to-release rates from examination of the form of the transient hydrogen exit flux. The introduction of cementite in these microstructures was assumed to be responsible. At aging temperatures of 600 deg c and higher, irreversible trapping of hydrogen was found to occur concurrently with the direct precipitation of the alloy carbide, TiC.
Publisher:
ISBN:
Category :
Languages : en
Pages : 187
Book Description
The general hydrogen embrittlement susceptibility of a titanium-bearing HSLA steel has been characterized and correlated with detailed transmission electron and field ion microscopic studies of various microstructures. The hydrogen permeability and trapping in the same microstructures has also been studied through the use of electrochemical polarization and potentiostatic detection. The trapping character of the various microstructures has been determined by comparison with the TEM and FIM results. Hydrogen embrittlement susceptibility has been determined by the use of cathodically precharged cylindrical tensile specimens and hydrogen induced cracking of double cantilever beam type fracture mechanics specimens. The hydrogen permeability studies showed that austenitized and quenched microstructures were composed of essentially low interaction energy reversible trap sites for hydrogen including but not restricted to grain boundaries, solute elements and dislocations. Aging at temperatures between 400 deg C and 500 deg C still resulted in a reversible trap population, although the character of trapping was inferred to have shifted to higher capture-to-release rates from examination of the form of the transient hydrogen exit flux. The introduction of cementite in these microstructures was assumed to be responsible. At aging temperatures of 600 deg c and higher, irreversible trapping of hydrogen was found to occur concurrently with the direct precipitation of the alloy carbide, TiC.
Effect of Microstructure and Trapping on the Hydrogen Embrittlement Susceptibility of a Titanium Bearing HSLA Steel
Author: Michael Francis Stevens
Publisher:
ISBN:
Category :
Languages : en
Pages : 175
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 175
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1346
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1346
Book Description
Dissertation Abstracts International
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 428
Book Description
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 428
Book Description
Metals Abstracts
Author:
Publisher:
ISBN:
Category : Metallurgy
Languages : en
Pages : 1076
Book Description
Publisher:
ISBN:
Category : Metallurgy
Languages : en
Pages : 1076
Book Description
Comprehensive Dissertation Index
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 1116
Book Description
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 1116
Book Description
Corrosion Abstracts
Author:
Publisher:
ISBN:
Category : Corrosion and anti-corrosives
Languages : en
Pages : 722
Book Description
Publisher:
ISBN:
Category : Corrosion and anti-corrosives
Languages : en
Pages : 722
Book Description
American Doctoral Dissertations
Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 540
Book Description
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 540
Book Description
Hydrogen Embrittlement and Stress Corrosion Cracking
Author: Alexander Robert Troiano
Publisher: ASM International
ISBN: 9781615031788
Category : Technology & Engineering
Languages : en
Pages : 356
Book Description
Publisher: ASM International
ISBN: 9781615031788
Category : Technology & Engineering
Languages : en
Pages : 356
Book Description
Government Reports Annual Index
Author:
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 1228
Book Description
Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 1228
Book Description
Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.