Title

Fatigue Properties Of Magnesium Alloy Forgings

Date

1960

Index Abstract

Contrails only

Photo Quality

Incomplete

Report Number

WADD TR 60-854

Creator

Schuette, Evan H.

Corporate Author

Dow Metal Products Company, Division of the Dow Chemical Company

Laboratory

Materials Central

Extent

112

Identifier

AD0260979

AD0260979

Access Rights

OTS

Distribution Classification

1

Contract

Af 33(038)-22609

DoD Project

7360

DoD Task

73604

DTIC Record Exists

No

Distribution Change Authority Correspondence

None

Report Availability

Full text available by request

Date Issued

1960-12

Abstract

Extensive axial-load and flexural fatigue tests were run on specimens from forged disks of four magnesium alloys; AZ31B, AZ71, AZ80A, and ZK60A. More limited tests were also made on forged disks of QZ66XA magnesium alloy and 2014 aluminum alloy, rolled rod of 2024 aluminum alloy, and AZ81A, AZ91C, and ZK51A magnesium-alloy sand castings, for comparative purposes. Included as a supplement, along with additional specimen data, are results of tests on full-scale I-beams in forged aluminium, forged magnesium, and sand-cast magnesium.

The more highly alloyed materials, AZ71, AZ80A, and ZK60A, showed fatigue properties superior to AZ31B. Among the former three alloys, however, there were no significant differences. Supplemental tests showed magnesium-alloy forgings to compare favorably with aluminum alloy forgings -- and to be superior to magnesium -alloy castings -- in the absence of sharp notches. Separately cast magnesium-alloy test bars give fatigue results equivalent to those obtained from magnesium-alloy forgings. In a production casting, however, it appears that fatigue characteristics may be impaired by the presence of internal stress raisers, which may or may not be visible.

Subject

Magnesium Alloys

Aluminum Alloys

Beams Electromagnetic)

Beams (Structural)

Castings

Creep

Fatigue (Mechanics)

Forging

Mechanical Properties

Stresses

Surface Properties

Test Equipment

Publisher

Wright-Patterson Air Force Base, OH : Wright Air Development Division, Air Research and Development Command, United States Air Force

Distribution Conflict

No

Type

report

Provenance

Lockheed Martin Missiles & Fire Control