Method of preparing a two-way shape memory alloy
Abstract
A two-way shape memory alloy, a method of training a shape memory alloy, and a heat engine employing the two-way shape memory alloy to do external work during both heating and cooling phases are disclosed. The alloy is heated under a first training stress to a temperature which is above the upper operating temperature of the alloy, then cooled to a cold temperature below the zero-force transition temperature of the alloy, then deformed while applying a second training stress which is greater in magnitude than the stress at which the alloy is to be operated, then heated back to the hot temperature, changing from the second training stress back to the first training stress. 8 figs.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 7007585
- Patent Number(s):
- 4435229
- Application Number:
- PPN: US 6-308127
- Assignee:
- PTO; EDB-94-123887
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2 Oct 1981
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; ALLOYS; FABRICATION; SHAPE MEMORY EFFECT; HEAT ENGINES; TEMPERATURE DEPENDENCE; ENGINES; 360101* - Metals & Alloys- Preparation & Fabrication; 360102 - Metals & Alloys- Structure & Phase Studies
Citation Formats
Johnson, A D. Method of preparing a two-way shape memory alloy. United States: N. p., 1984.
Web.
Johnson, A D. Method of preparing a two-way shape memory alloy. United States.
Johnson, A D. Tue .
"Method of preparing a two-way shape memory alloy". United States.
@article{osti_7007585,
title = {Method of preparing a two-way shape memory alloy},
author = {Johnson, A D},
abstractNote = {A two-way shape memory alloy, a method of training a shape memory alloy, and a heat engine employing the two-way shape memory alloy to do external work during both heating and cooling phases are disclosed. The alloy is heated under a first training stress to a temperature which is above the upper operating temperature of the alloy, then cooled to a cold temperature below the zero-force transition temperature of the alloy, then deformed while applying a second training stress which is greater in magnitude than the stress at which the alloy is to be operated, then heated back to the hot temperature, changing from the second training stress back to the first training stress. 8 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {3}
}
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