Program to Develop High Strength Aluminum Powder Metallurgy Products. Phase IV. Scale up to 3200 lb. Billets.

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Abstract:

Preheating with Ar or no gas flow followed by evacuation and vacuum hot pressing gave PM wrought products with high fracture toughness only when the vacuum can temperature was maintained above 800F. Vacuum preheating and vacuum hot pressing imparted high toughness in PM wrought products for can temperatures from 600F to 820F. MA87 extrusions from compacts preheated below the alloy solidus gave higher transverse fracture toughness than earlier extrusions preheated above the solidus temperature.

Author(s):
Cebulak, W. S.
Author Organization(s):
ALUMINUM CO OF AMERICA ALCOA CENTER PA
Descriptive Note:
Quarterly rept. no. 6, 20 Dec-19 Dec 73, on Phase 4,
Supplementary Note:
See also AD-904 979.
Pagination:
0023

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Contract/Grant Number(s):
DAAA25-72-C-0593
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*Powder metallurgy, *Aluminum alloys, High strength, Powder alloys, Compacting, Isostatic pressing, Hot pressing, Billets, Extrusion, Vacuum apparatus
Field(s)/Group(s):
Metallurgy and Metallography, Fabrication Metallurgy
Report Date:
1974 Apr 26