Development of Improved Cutting Tool Materials

Item

Title
Development of Improved Cutting Tool Materials
Date
1963
Abstract
Experimental work has involved the preparation and initial evaluation of a wide range of cutting tool materials produced by a variety of techniques. An M2 high-speed steel base was enriched in vanadium, then forged into bar stock. Material containing up to 18wt% vanadium was fabricable, but none of the vanadium-enriched compositions were heat treatable without subsequent enrichment in carbon by solid-state surface carborization. This procedure should result in a tool material having a tough core with a hard, high-carbon surface layer. The casting of an M1 high-speed steel into an oscillating mold produced a much finer distribution of carbides than similar material cast into stationary mold. Initial atomization experiments using an M2 high-speed steel produced partially spheroidized particles generally finer than 80 mesh. No massive carbides were observed in the microstructures. Studies of liquid-phase sintered carbides included 2 general work areas. The first, utilizing iron-, nickel-, or cobalt-containing matrix phases, was concerned with the development of fine spheroidized carbides, principally VC. The second work area involved wettability and sintering studies of various carbides with high-melting matrix phases.
Date Issued
1963-01
Extent
27
Corporate Author
Armour Research Foundation
Identifier
AD0294621
Corporate Report Number
ARF-B6000-3
Report Number
ASD TDR 7-714 Volume 1
AD Number
AD-294 621
Contract
AF 33(657)8786
Distribution Conflict
Yes
Index In
U.S. Government Research Reports, Vol. 38, No. 8, p. 91
Index Price
$3.60
Distribution Classification
2
DTIC Record Exists
No
Report Availability
Not available via Contrails
Type
report
Creator
Holtz, F. C.