Statistical Analysis of Tensile Properties of Heat-treated Ti-4A1-3Mo-1V Sheet

Statistical Analysis of Tensile Properties of Heat-treated Ti-4A1-3Mo-1V Sheet PDF Author: H. R. Ogden
Publisher:
ISBN:
Category : Metals
Languages : en
Pages : 48

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Statistical Analysis of Tensile Properties of Heat-treated Ti-4A1-3Mo-1V Sheet

Statistical Analysis of Tensile Properties of Heat-treated Ti-4A1-3Mo-1V Sheet PDF Author: H. R. Ogden
Publisher:
ISBN:
Category : Metals
Languages : en
Pages : 48

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Statistical Analysis of Tensile Properties of Heat-treated Ti-4A1-3Mo-1V and Ti-2.5A1-16V Sheet

Statistical Analysis of Tensile Properties of Heat-treated Ti-4A1-3Mo-1V and Ti-2.5A1-16V Sheet PDF Author: G. H Beatty
Publisher:
ISBN:
Category : Metals
Languages : en
Pages : 54

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IN THE SOLUTION TREATED AND AGED CONDITION, Ti4Al-3Mo-1V has a higher ultimate strength than does Ti-2.5Al-16V, but the two alloys are about even in yield strength and elongation. In the solution-treated condition, Ti-4Al-3Mo-1V is unquestionably stronger than Ti-2.5Al-16V. These conclusions are independent of producer. There is not much difference in the same alloy produced by different companies. The alloys developed under the Titanium-Alloy Sheet-Rolling Program would not endure the most critical interpretation of release property specifications. On the other hand, these alloys come reasonably close to specifications. A complete set of release property specifications is available only for specimens that have been solution treated and aged. Such specimens do not all exhibit the desired ultimate and yield strength, but the percentage of rejects is small enough to be encouraging. (Author).

The Effect of Nuclear Radiation on Structural Metals

The Effect of Nuclear Radiation on Structural Metals PDF Author: Frederic R. Shober
Publisher:
ISBN:
Category : Metals
Languages : en
Pages : 120

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Book Description
The effect of fast-neutron (>1 Mev) irradiation on the mechanical properties of structural metals and alloys was studied. Although the yield strengths and ultimate tensile strengths are increased su stantially for most materials, the ductility suffers severe decreases. This report presents these changes in properties of several structural metals for a number of neutron exposures within the 1.0 x 10 to the 18th power to 5.0 x 10 to the 21st power n/sq cm range. Data summarizing these effects on several classes of materials such as carbon steels, low-alloy steels, stainless steels, Zr-base alloys, ni-base alloys, Al-base alloys, and Ta are given. Additional data which show the influence f irradiation temperatures and of post-irradiation annealing on the radiation-induced property changes are also given and discussed. Increases as great as 175% in yield strength, 100% in ultimate strength, and decreases of 80% in total elongation are reported for fast-neutron exposures as great as 5 10 to the 21st power n/sq cm. (Author).

Vacuum Degassing in the Production of Premium-quality Steels

Vacuum Degassing in the Production of Premium-quality Steels PDF Author: P. J. O'Reilly
Publisher:
ISBN:
Category : Alloys
Languages : en
Pages : 138

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Book Description
This report gives the experiences of several steel producers and consumers with vacuum degassing as a melting practice in the manufacture of high-strength steels for critical applications. The parameters involved in determining the effects of melting practice on mechanical properties are outlined. Pertinent melting processes are described and evaluated qualitatively. In presenting the data, vacuum degassing is compared with other melting practices such as conventional air melting and consumable-electrode vacuum-arc remelting (CEVAR). Generally, there is a trend indicating that vacuum degassing is being used in some production applications instead of air-melted or CEVAR material. In terms of higher and more uniform transverse tensile properties and impact strength, longer fatigue life, and improved cleanliness, the CEVAR alloys were the best. Vacuum degassing by any of the various methods resulted in an improvement in properties of air-melted alloys. In some instances it appeared that the quality of CEVAR alloys could be approached when stream degassing or D-H (Dortmund-Horder) treatment was applied to air melts. Recommendations are given for additional investigations on the effects of melting practice on mechanical properties of premium-quality steels. (Author).

The Effects of High Pressure, High Temperature Hydrogen on Steel

The Effects of High Pressure, High Temperature Hydrogen on Steel PDF Author: Ellis E. Fletcher
Publisher:
ISBN:
Category : Steel
Languages : en
Pages : 82

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Book Description
This report deals with the deleterious effects of hydrogen gas on steel at elevated temperatures and/or pressures. Hydrogen attack on steels is manifest as decarburization, intergranular fissuring, or blistering. These conditions result in lowered tensile strength, ductility, and impact strength. The reaction of hydrogen with iron carbide to form methane is probably the most important chemical reaction involved in the attack on steel by hydrogen. Attack of steel at elevated temperatures and pressures is limited or prevented by the following measures: (1) use of steel alloyed with strong carbide-forming elements, (2) use of liners of resistant alloy steels, and (3) substitution of resistant nonferrous alloys.

Electron-beam Processes

Electron-beam Processes PDF Author: Herbert W. Mishler
Publisher:
ISBN:
Category : Electron beams
Languages : en
Pages : 72

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Book Description
Operation of the electron-beam process for welding, melting, and achining is described. The different classes of equipment for each of the 3 processes are dicussed, and commercialy available equipment, both domestic and foreign, is described and illustrated.

Structural Considerations in Developing Refractory Metal Alloys

Structural Considerations in Developing Refractory Metal Alloys PDF Author: R. I. Jaffee
Publisher:
ISBN:
Category : Fracture mechanics
Languages : en
Pages : 36

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Book Description
Progress made in applying advanced techniques and structural concepts to the problem of strengthening the Group VI-A metals, Cr, Mo, and W, is examined. At low temperatures, T/Tm

Cracking in High-strength Steel Weldments

Cracking in High-strength Steel Weldments PDF Author: P. A. Kammer
Publisher:
ISBN:
Category : Steel
Languages : en
Pages : 132

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Book Description
Weldment cracking is a broad complex field. Even if one considers only cracking of steel weldments, the problems range from cracking at temperatures near the solidus during welding to cracking at room temperature days, weeks, or months after welding is completed. Numerous reports of investigations in this field are contained in the published and unpublished literature. However, most of these reports cover only a particular problem in a specific area of the broad field of weldment cracking. This review attempts to cover the major aspects of the entire field of weldment cracking. Necessarily, the review is for the most part general, only being specific in a few instances to illustrate a point. (Author).

Explosive Forming of Metals

Explosive Forming of Metals PDF Author: D. E. Strohecker
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ISBN:
Category : Explosive forming
Languages : en
Pages : 72

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Classification of DMIC Reports and Memoranda by Major Subject

Classification of DMIC Reports and Memoranda by Major Subject PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 54

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Book Description
To aid in quick identification and easy location of specific technical data and information in the various reports and memoranda which have been prepared and distributed by the Defense Metals Information Center, as well as by DMIC's forerunner, the Titanium Metallurgical Laboratory, a classification by major subject matter was prepared. The classification covers reports through DMIC Report 193 and memoranda through DMIC Memorandum 183. (Author).