THE PROPOSED STUDY SEEKS TO ESTABLISH THE DIRECT RELATIONSHIP BETWEEN MELT POOL FLUID DYNAMICS AND MICROSTRUCTURAL CONTROL IN LASER SURFACE ALLOYING AND TO CONTRIBUTE TO THE OVERALL UNDERSTANDING AND CONTROL OF THE ALLOYING PROCESS.

Award Information
Agency:
National Science Foundation
Branch
n/a
Amount:
$40,000.00
Award Year:
1984
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
1634
Agency Tracking Number:
1634
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Research Park, P.o. Box 3100, Andover, MA, 01810
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
DENNIS CREHAN
PRINCIPAL SCIENTIST
() -
Business Contact:
Dennis Crehan
Principal Scientist
() -
Research Institution:
n/a
Abstract
THE PROPOSED STUDY SEEKS TO ESTABLISH THE DIRECT RELATIONSHIP BETWEEN MELT POOL FLUID DYNAMICS AND MICROSTRUCTURAL CONTROL IN LASER SURFACE ALLOYING AND TO CONTRIBUTE TO THE OVERALL UNDERSTANDING AND CONTROL OF THE ALLOYING PROCESS. A UNIQUE MIXING MECHANISM HAS BEEN PROPOSED WHICH EXPLAINS PRESENT ANOMOLIES OBSERVED IN ALLOY MIXING BEHAVIOR DURING LASER HEATING. A COMBINED THEORETICAL-EXPERIMENTAL EFFORT IS PROPOSED TO STUDY THE THERMAL AND COMPOSITIONAL CONTRIBUTIONS TO MARANGONI-TYPE FLOW IN THE ALLOY MELT POOL. BY UNDERSTANDING THE FLOW CHARACTERISTICS AND MIXING MECHANISMS IN THE LASER MELT POOL, CONSIDERABLE CONTROL OVER THE ALLOYING PROCESS IS ACHIEVED AND PRESENT COMMERCIAL APPLICATIONS OF THIS PROCESS ARE EXTENDED WELL BEYOND CURRENT CAPABILITIES.

* information listed above is at the time of submission.

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