Isothermal study of bainitic and martensitic transformations in some low alloy steels using a new magnetic permeability technique
The upper and lower bainitic harderabilities were established for the commercial low alloy heat treatable steels AISI 4130, AISl 4140, D6AC and AMS 6416 (300-M). The kinetics of the bainitic reaction below the mantensite start temperature (M/sub s/) were studied and the martensite range temperatures were determined. The materials AISI 4130 and 300-M were austenitized at both 880 deg C and 1200 deg C and the effect of the austenitizing temperature on the upper bainitic hardenability was determined. A magnetic permeability technique was employed in this investigation to monitor the austenite transformations. Computational methods were developed to decode, analyze, and plot the austenite decomposition data. (auth)
- Research Organization:
- California Univ., Berkeley (USA). Lawrence Berkeley Lab.
- DOE Contract Number:
- W-7405-ENG-48
- NSA Number:
- NSA-29-028920
- OSTI ID:
- 4337128
- Report Number(s):
- LBL-2279
- Resource Relation:
- Other Information: Thesis. Orig. Receipt Date: 30-JUN-74
- Country of Publication:
- United States
- Language:
- English
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