Deformation and Fracture of P/M (Powder/Metallurgy) Titanium Alloys.

Deformation and Fracture of P/M (Powder/Metallurgy) Titanium Alloys.

Active / Technical Report | Accession Number: ADA148672 |

Abstract:

Progress is reviewed for a research program whose purpose is to provide a broad-based understanding of the application and consequences of certain advanced processing techniques to high performance alloys in general and to Ti alloys in particular. The research ranges from experimental studies of hot isostatic pressing HIP to experimentalanalytical modeling of the deformation and fracture of materials with pre-existing porosity. Aspects of the search are also a fundamental study of fracture utilizing engineering materials containing processing-induced defects. Progress for the period October 1, 1983 to September 30, 1984 is reviewed for the following portions of this research program 1 the influence of porosity on the deformation and fracture of alloys over a wide range of strain rates 2 the effects of voidpore distributions on ductile fracture as modeled by arrays of holes 3 hot isostatic pressing of metallic powders and 4 grain sizestress state effects on the hydrogen embrittlement of titanium. Author

Author(s):

Koss, D. A.

Author Organization(s):

MICHIGAN TECHNOLOGICAL UNIV HOUGHTON DEPT OF METALLURGICAL ENGINEERING

Descriptive Note:

Annual rept. 1 Oct 83-30 Sep 84,

Pagination:

0026

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:

Approved For Public Release

RECORD

Collection: TR

Identifying Numbers

Report Number(s):

TR-27

Contract/Grant Number(s):

N00014-76-C-0037

Subject Terms

Joint Capability Areas:

JCA_4.6_Engineering; JCA_5_Command and Control; JCA_5.3_Planning; JCA_1.2.7_Experimentation; JCA_1.2_Force Preparation; JCA_1_Force Support

Modernization Areas:

Fully Networked C3

Communities of Interest:

Air Platforms

Descriptor(s):

*FRACTURE(MECHANICS), *POWDER METALLURGY, *TITANIUM ALLOYS, STRESS STRAIN RELATIONS, DEFORMATION, TENSILE PROPERTIES, HOT PRESSING, ISOSTATIC PRESSING, GRAIN SIZE, HIGH STRENGTH ALLOYS, POROSITY, VOIDS, STRAIN RATE, ELECTRON MICROSCOPY, DUCTILITY, HYDROGEN EMBRITTLEMENT, SINTERING

Field(s)/Group(s):

Metallurgy and Metallography, Mechanics

Keyword(s):

HIP(Hot Isostatic Pressing), WUNR421091

Report Date:

1984 Nov 05