US2798807A - Titanium base alloy - Google Patents

Titanium base alloy Download PDF

Info

Publication number
US2798807A
US2798807A US642385A US64238557A US2798807A US 2798807 A US2798807 A US 2798807A US 642385 A US642385 A US 642385A US 64238557 A US64238557 A US 64238557A US 2798807 A US2798807 A US 2798807A
Authority
US
United States
Prior art keywords
titanium
base alloy
titanium base
beryllium
alloy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US642385A
Inventor
Frank A Crossley
John J Rausch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Armour Research Foundation
Original Assignee
Armour Research Foundation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Armour Research Foundation filed Critical Armour Research Foundation
Priority to US642385A priority Critical patent/US2798807A/en
Application granted granted Critical
Publication of US2798807A publication Critical patent/US2798807A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C14/00—Alloys based on titanium

Definitions

  • This invention relates to titanium base alloys and more particularly to a unique titanium-vanadium-beryllium alloy having high tensile strength and strength retention at elevated temperatures.
  • An object of the instant invention is to provide an improved titanium base alloy.
  • Another object of the instant invention is to provide a titanium alloy of high tensile strength and which may be age hardened to such tensile capability.
  • Still another object of the instant invention is to provide a titanium base alloy which maintains its strength characteristics when subjected to high temperature.
  • the instant invention consists of an improved alloy composed essentially of from 3 to 5% vanadium, 0.25 to 2.0% beryllium, the balance titanium. Alloys of this composition have a tensile strength of from 120,000 to 140,000 pounds per square inch and illustrate hardness after aging at elevated temperature of from 200 to 500 Vickers units. The hardness of the material depends somewhat upon the temperature at which it is aged. We have found that age-hardening at 300 C. is preferable to the usage of higher temperatures, for example 450 or 600? centigrade. We have also found that as the beryllium content is increased there is an increase in hardness. However, such hardness increase is not in direct proportion to such increased beryllium.
  • the alloy of the instant invention may be readily made by the usual alloying techniques.
  • the material may then be formed into sheets or the like and the sheets in turn may be then fabricated into almost any desired shape.
  • the end products are age hardened at a slightly elevated temperature to yield the tensile strengths above mentioned. In View of the tensile strength retention under high temperature use the instant alloy is admirably suited for the structural and skin members of modern aircraft.
  • a titanium base alloy having high tensile strength at elevated temperatures which is composed essentially of from 3 to 5% of vanadium and from 0.25% to 2% beryllium, balance titanium.
  • a titanium base alloy having high tensile strength at elevated temperatures composed essentially of from 3 to 5% vanadium and 0.25 to 2% beryllium, balance titanium, the titanium containing up to 0.02% hydrogen.
  • a high tensile strength titanium base alloy composed essentially of 4% vanadium and from 0.25% to 0.75% beryllium, balance titanium.

Description

United States Patent TITANIUIVI BASE ALLOY Frank A. Crossley, Chicago, and John J. Rausch, Glenview, 11]., assignors to Armour Research Foundation of Illinois Institute of Technology, Chicago, 111., a corporation of Illinois No Drawing. Application February 26, 1957,
Serial No. 642,385
3 Claims. (Cl. 75-1755) This invention relates to titanium base alloys and more particularly to a unique titanium-vanadium-beryllium alloy having high tensile strength and strength retention at elevated temperatures.
An object of the instant invention is to provide an improved titanium base alloy.
Another object of the instant invention is to provide a titanium alloy of high tensile strength and which may be age hardened to such tensile capability.
Still another object of the instant invention is to provide a titanium base alloy which maintains its strength characteristics when subjected to high temperature.
The instant invention consists of an improved alloy composed essentially of from 3 to 5% vanadium, 0.25 to 2.0% beryllium, the balance titanium. Alloys of this composition have a tensile strength of from 120,000 to 140,000 pounds per square inch and illustrate hardness after aging at elevated temperature of from 200 to 500 Vickers units. The hardness of the material depends somewhat upon the temperature at which it is aged. We have found that age-hardening at 300 C. is preferable to the usage of higher temperatures, for example 450 or 600? centigrade. We have also found that as the beryllium content is increased there is an increase in hardness. However, such hardness increase is not in direct proportion to such increased beryllium.
The alloy of the instant invention may be readily made by the usual alloying techniques. The material may then be formed into sheets or the like and the sheets in turn may be then fabricated into almost any desired shape. The end products are age hardened at a slightly elevated temperature to yield the tensile strengths above mentioned. In View of the tensile strength retention under high temperature use the instant alloy is admirably suited for the structural and skin members of modern aircraft.
We claim as our invention:
1. A titanium base alloy having high tensile strength at elevated temperatures which is composed essentially of from 3 to 5% of vanadium and from 0.25% to 2% beryllium, balance titanium.
2. A titanium base alloy having high tensile strength at elevated temperatures composed essentially of from 3 to 5% vanadium and 0.25 to 2% beryllium, balance titanium, the titanium containing up to 0.02% hydrogen.
3. A high tensile strength titanium base alloy composed essentially of 4% vanadium and from 0.25% to 0.75% beryllium, balance titanium.
References Cited in the file of this patent Titanium project, Navy contract No. NOa(s) 8698, titled The Manufacture of Ductile Titanium and Titanium A'lloys, Report No. 17.
Final report, PB 103370 released June 15, 1951, pages 36 thru 48 (Beryllium), and pages 101 thru 106 (Vanadium).

Claims (1)

1.A TITANIUM BASE ALLOY HAVING HIGH TENSILE STRENGTH AT ELEVATED TEMPERATURES WHICH IS COMPOSED ESSENTIALLY OF FROM 3 TO 5% VANADIUM AND FROM 0.25% TO 2% BERYILIUM, BALANCE TITANIUM.
US642385A 1957-02-26 1957-02-26 Titanium base alloy Expired - Lifetime US2798807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US642385A US2798807A (en) 1957-02-26 1957-02-26 Titanium base alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US642385A US2798807A (en) 1957-02-26 1957-02-26 Titanium base alloy

Publications (1)

Publication Number Publication Date
US2798807A true US2798807A (en) 1957-07-09

Family

ID=24576326

Family Applications (1)

Application Number Title Priority Date Filing Date
US642385A Expired - Lifetime US2798807A (en) 1957-02-26 1957-02-26 Titanium base alloy

Country Status (1)

Country Link
US (1) US2798807A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3007824A (en) * 1958-02-28 1961-11-07 Ici Ltd Method of heat treating a ti-be alloy
US4197643A (en) * 1978-03-14 1980-04-15 University Of Connecticut Orthodontic appliance of titanium alloy

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3007824A (en) * 1958-02-28 1961-11-07 Ici Ltd Method of heat treating a ti-be alloy
US4197643A (en) * 1978-03-14 1980-04-15 University Of Connecticut Orthodontic appliance of titanium alloy

Similar Documents

Publication Publication Date Title
ES2032336T3 (en) HEAVY WOLFRAMIO-NIQUEL-HIERRO ALLOYS OF VERY HIGH MECHANISCAL CHARACTERISTICS AND PROCEDURE FOR THE MANUFACTURE OF SUCH ALLOYS.
US2798807A (en) Titanium base alloy
US3561954A (en) Aluminum-base alloys
US3113863A (en) Columbium base alloy
US3264147A (en) Beryllium alloy and process
US3395012A (en) Niobium alloys
US2109285A (en) Alloy
US2993783A (en) Aluminum base alloys
US2801167A (en) Titanium alloy
US2609309A (en) Magnesium alloy and method of treatment
US3119689A (en) High strength magnesium-lithium base alloys
GB757413A (en) Titanium alloys and their application
US1568224A (en) Bearing metal
SU143234A1 (en) Sintered Aluminum Alloy
Ramaswami Deformation Twinning in Face‐Centered Cubic Crystals
US2719085A (en) Silver-silicon alloys
US2401136A (en) Zinc base alloys
GB1333729A (en) Titanium base alloy
SU172050A1 (en) HIGH-STRENGTH MAGNETIC ALLOY
SU114290A1 (en) High strength foundry and wrought magnesium alloy with nickel
US2546931A (en) Magnesium alloy
US1360045A (en) Metal alloy for cable-casings and the like
SU111246A1 (en) Wrought Magnesium Alloy
Dowling et al. The Influence of Manganese Additions on the Fracture Behaviour of an Aluminum-Magnesium-Silicon Alloy
SU263885A1 (en)