isothermal annealing

isothermal annealing

[¦ī·sə¦thər·məl ə′nēl·iŋ]
(metallurgy)
Transformation of an austenitic steel to ferrite and pearlite at constant temperature. Also known as isothermal transformation.
References in periodicals archive ?
They have used anisothermal and isothermal annealing methods to do it.
The in situ experiments for this study were carried out in forming gas, and the annealing procedure consisted of two steps: (a) isothermal annealing at 450[degrees]C and (b) ramped annealing from 450[degrees]C to 750[degrees]C at a rate of 40[degrees]C/min.
[18] (and for quenching followed by isothermal annealing at 60[degrees]C Li et al.
Following long-term isothermal annealing leads to achievement of equilibrium chemical compositions of the phases.
Clause 5 Regarding Pre-Machining Heat Treatment May Be Read As- Suitable Isothermal Annealing Based On Composition And Dimensions Of Forging Block May Be Decided By Manufacturer So As To Relieve Residual Stress As A Pre Machining Treatment Of Forged Blanks.
In its production of cast components, AEP uses a significant amount of nitrogen for isothermal annealing and ferritic nitrocarburizing.
For this research, the long-term isothermal annealing at room temperature was used.
Among the topics there are the comparative Mossbauer analysis of the superfine structure of Hadfield steel under different kinds of severe deformation, the isochronal and isothermal annealing of wrought aluminum alloy, the quantitative analysis of fiber fracture in powder injection molded metal composites, the characterization and properties of copper-silica sand nanoparticle composites, modeling three-dimensional moving heat sources in a semi-infinite medium and applications to submerged arc welding, and self-diffusion in nano zinc sulphide.
Recently investigated spheroidization processes can be divided into four groups: isothermal annealing at a temperature slightly below [A.sub.1], thermal cycling near [A.sub.1], isothermal annealing with the aid of prior cold work and finally, hot deformation before, during or after the transformation of austenite to pearlite (Kamyabi-Gol, 2010).
The condensates were investigated in the initial condition and after heat treatment, isothermal annealing in vacuum at T = 650[degrees]C, for 2 h.
For example, the Universal Instruments Consortium observed that, upon isothermal annealing at 150[degrees]C, some SnAgCu (SAC) solder joints showed increased void formation at the interface between the Cu-Sn intermetallic layer and the copper plating.
The part required subsequent isothermal annealing and shot blasting.