Use of High Magnetic Fields to Improve Material Properties for Hydraulics, Automotive and Truck Components

Ludtka, Gerard Michael¹  Ludtka, Gail Mackiewicz-¹  Wilgen, John B¹  Kisner, Roger A¹  Ahmad, Aquil² 

[1] ORNL;Eaton Corporation

关键词: Eaton Innovation Center;    High Magnetic Fields;    Hydraulics;    Material Properties;   

DOI  :  10.2172/984782
RP-ID  :  ORNL/TM-2010/129
PID  :  OSTI ID: 984782

美国|英语

来源: SciTech Connect

【 摘 要 】

In this CRADA, research and development activities were successfully conducted on magnetic processing effects for the purpose of manipulating microstructure and the application specific performance of three alloys provided by Eaton (alloys provided were: carburized steel, plain low carbon steel and medium carbon spring steel). Three specific industrial/commercial application areas were considered where HMFP can be used to provide significant energy savings and improve materials performance include using HMFP to: 1.) Produce higher material strengths enabling higher torque bearing capability for drive shafts and other motor components; 2.) Increase the magnetic response in an iron-based material, thereby improving its magnetic permeability resulting in improved magnetic coupling and power density, and 3.) Improve wear resistance. The very promising results achieved in this endeavor include: 1.) a significant increase in tensile strength and a major reduction in volume percent retained austenite for the carburized alloy, and 2.) a substantial improvement in magnetic perm respect to a no-field processed sample (which also represents a significant improvement over the nominal conventional automotive condition of no heat treatment). The successful completion of these activities has resulted in the current 3-year CRADA No. NFE-09-02522 Prototyping Energy Efficient ThermoMagnetic and Induction Hardening for Heat Treat and Net Shape Forming Applications .