Title page for ETD etd-0429102-153911

Document Type thesis

Author Name Fontecchio, Marco

URN etd-0429102-153911

Title Quench Probe and Quench Factor Analysis of Aluminum Alloys in Distilled Water

Degree MS

Department Materials Science & Engineering

Advisors
Dr. Md. Maniruzzaman, Committee Member
Dr. Richard D. Sisson Jr., Advisor
Dr. Ronald R. Biederman, Committee Member

Keywords
Cooling Rates
Quench Factor Analysis
6061 Aluminum

Date of Presentation/Defense 2002-04-29

Availability unrestricted

Abstract
A 6061 aluminum probe was quenched with the CHTE probe-quenching system in distilled water while varying bath temperature and the level of agitation. Time vs. temperature data was collected during the quench by use of an ungrounded K-type thermocouple embedded inside the probe. Cooling rates and heat transfer coefficients, h, were calculated and Quench Factor Analysis (QFA) was also performed to quantitatively classify the quench severity. The data showed an increase in both maximum cooling rate and heat transfer coefficient and a decrease in the Quench Factor, Q, as bath temperature decreased and agitation level increased. Maximum heat transfer coefficient values ranged from 1000 W/m2K to 3900 W/m2K while maximum cooling rates of 50°C/s to 190°C/s were achieved. In addition, it was found that at higher levels of agitation, there was also an increase in the variation (i.e. standard deviation) of the cooling rate and therefore h and Q.

Files
fontecchio.pdf

Browse by Author | Browse by Department | Search all available ETDs

Questions? Email etd-questions@wpi.edu
Maintained by webmaster@wpi.edu

Document Type	thesis
Author Name	Fontecchio, Marco
URN	etd-0429102-153911
Title	Quench Probe and Quench Factor Analysis of Aluminum Alloys in Distilled Water
Degree	MS
Department	Materials Science & Engineering
Advisors	Dr. Md. Maniruzzaman, Committee Member Dr. Richard D. Sisson Jr., Advisor Dr. Ronald R. Biederman, Committee Member
Keywords	Cooling Rates Quench Factor Analysis 6061 Aluminum
Date of Presentation/Defense	2002-04-29
Availability	unrestricted
Abstract A 6061 aluminum probe was quenched with the CHTE probe-quenching system in distilled water while varying bath temperature and the level of agitation. Time vs. temperature data was collected during the quench by use of an ungrounded K-type thermocouple embedded inside the probe. Cooling rates and heat transfer coefficients, h, were calculated and Quench Factor Analysis (QFA) was also performed to quantitatively classify the quench severity. The data showed an increase in both maximum cooling rate and heat transfer coefficient and a decrease in the Quench Factor, Q, as bath temperature decreased and agitation level increased. Maximum heat transfer coefficient values ranged from 1000 W/m2K to 3900 W/m2K while maximum cooling rates of 50°C/s to 190°C/s were achieved. In addition, it was found that at higher levels of agitation, there was also an increase in the variation (i.e. standard deviation) of the cooling rate and therefore h and Q.
Files	fontecchio.pdf