The Heat Treatment of Wires: A Preliminary Report

1976 ◽  
Vol 3 (4) ◽  
pp. 217-222 ◽  
Author(s):  
N. E. Waters ◽  
W. J. B. Houston ◽  
C. D. Stephens
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Nickel Alloy ◽  
Elastic Properties ◽  
Preliminary Report ◽  
Flexural Rigidity ◽  
Elastic Recovery ◽  
Steel Wire ◽  
Strain Range ◽  
Cobalt Chrome

The changes induced by a heat treatment have been examined on a standard 18/8 Stainless Steel wire (grade 302 S25 of BS 970: Part 4), and a heat treatable wire of cobalt—chrome—nickel alloy. The flexural rigidity, elastic properties after forming over a wide strain range, resistance to failure in bending and elastic recovery after a heat treatment were examined. The optimal heat treatments were found to be 400–450°C and 475–525°C for the 18/8 and cobalt—chrome—nickel alloy respectively. These optima were unchanged for heat-treatment times between 1 and 16 minutes.

scholarly journals The Influence of heat treatment in orthodontic arches made of stainless steel wire

2000 ◽  
Vol 3 (3) ◽  
pp. 97-98 ◽  
Author(s):  
R.S. de Biasi ◽  
A.C.O. Ruela ◽  
C.N. Elias ◽  
O. Chevitarese
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Steel Wire ◽  
Stainless Steel Wire

Optimum Time and Temperature for Stress Relief Heat Treatment of Stainless Steel Wire

1973 ◽  
Vol 52 (6) ◽  
pp. 1171-1175 ◽  
Author(s):  
Michael R. Marcotte
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Steel Wire ◽  
Stress Relief ◽  
Stainless Steel Wire ◽  
Optimum Time ◽  
Dependent Variables

With the use of springback and recovery as dependent variables, the effects of time and temperature of stress relief heat treatment of stainless steel wire were studied. Stainless steel springs exposed to a stress relief heat treatment of 750 F for 11 minutes appear to have significantly improved spring properties.

scholarly journals Microstructure of laser metal deposited duplex stainless steel: Influence of shielding gas and heat treatment

2020 ◽  
Author(s):  
Maria Asuncion Valiente Bermejo ◽  
Karthikeyan Thalavai Pandian ◽  
Björn Axelsson ◽  
Ebrahim Harati ◽  
Agnieszka Kisielewicz ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Nitrogen Loss ◽  
Steel Wire ◽  
Research Work ◽  
Shielding Gas ◽  
Austenite Content ◽  
Heat Treated ◽  
Phase Balance

AbstractThis research work is the first step in evaluating the feasibility of producing industrial components by using Laser Metal Deposition with duplex stainless steel Wire (LMDw). The influence of Ar and N2 shielding gases was investigated in terms of nitrogen loss and in the microstructure and austenite content of different deposited geometries. The evolution of the microstructure in the build-up direction of the Ar and N2-shielded blocks was compared in the heat-treated and as-deposited conditions. The susceptibility for oxygen pick-up in the LMDw deposits was also analyzed, and oxygen was found to be in the range of conventional gas-shielded weldments. Nitrogen loss occurred when Ar-shielding was used; however, the use of N2-shielding prevented nitrogen loss. Austenite content was nearly doubled by using N2-shielding instead of Ar-shielding. The heat treatment resulted in an increase of the austenite content and of the homogeneity in the microstructure regardless of the shielding gas used. The similarity in microstructure and the low spread in the phase balance for the as-deposited geometries is a sign of having achieved a stable and consistent LMDw process in order to proceed with the build-up of more complex geometries closer to industrial full-size components.

scholarly journals Influence of heat treatment on the mechanical properties of CrNi stainless steel orthodontic wires

2019 ◽  
Vol 24 (1) ◽  
pp. 68-73
Author(s):  
Clariana Hoehne Sepúlveda ◽  
Sávio Morato de Lacerda Gontijo ◽  
Leandro de Arruda Santos ◽  
Alexandre Fortes Drummond ◽  
Leonardo Foresti Soares de Menezes ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Tensile Strength ◽  
Stainless Steel ◽  
Steel Wire ◽  
Orthodontic Wires ◽  
Rectangular Section ◽  
Student’S T ◽  
Level Of Significance ◽  
Orthodontic Archwires

ABSTRACT Introduction: The heat treatment of stainless steel wires is a routine clinical procedure adopted by many dentists in order to relieve the stress caused after performing bends in the archwire. Objective: This study aimed to evaluate the influence of heat treatment of stainless steel archwires with a rectangular section of 0.016 x 0.022’-in. Methods: For analysis of the dimensional stability, the anterior and posterior dimensions of forty 0.016 x 0.022-in stainless steel orthodontic archwires without heat treatment and 30 days after heat treatment were evaluated. For analysis of the mechanical properties, 12 stainless steel wire segments with the same rectangular section without heat treatment and 30 days after heat treatment were tested through tensile strength and strain tests. To evaluate if there were differences between the anterior and posterior dimensions, the results were analyzed by the Student’s t-test. To compare the tensile strength and strain between the groups, the ANOVA test was used. The level of significance adopted was 95% (p< 0.05). Results: The heat treatment did not stop the expansion of archwires 30 days after their preparation, and there was no statistical difference in the tensile strength and strain tests with and without heat treatment. Conclusion: From the findings of this study, it can be conclude that the mechanical behavior of heat-treated stainless steel archwires is similar to that of archwires not subjected to heat treatment.

Cracking in Welds of Heavy-Wall Stainless Steel and Nickel Alloy Piping During Fabrication

2009 ◽  
Author(s):  
Tomoaki Kiso ◽  
Kunio Ishii ◽  
Ichiro Seshimo
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Nickel Alloy ◽  
Postweld Heat Treatment ◽  
Stress Relief ◽  
Reheat Cracking ◽  
As Stress ◽  
Postweld Heat ◽  
Wall Components ◽  
Wall Stainless Steel

Heavy-wall austenitic stainless steel and nickel alloy piping components can sometimes suffer cracking during fabrication. Cracking occurs in the materials during fabrication as a result of solidification cracking during welding and reheat cracking (also referred to as stress relaxation cracking or stress relief cracking) during postweld heat treatment (PWHT) such as solution heat treatment or stabilizing heat treatment. This paper describes several case studies of recent cracking in welds of heavy-wall piping components fabricated from Type 321 stainless steel and Alloy 800HT that have occurred during fabrication. The severe cracking occurred in weld metal in each of the heavy-wall components. As a result of investigations, it was concluded that most likely cause for the cracking was a result of reheat cracking occurring during PWHT.

scholarly journals Effect of heat treatment on the mechanical properties of stainless steel wire

2021 ◽  
Vol 1942 (1) ◽  
pp. 012102
Author(s):  
M A Kaplan ◽  
A Yu Ivannikov ◽  
A D Gorbenko ◽  
A V Mikhailova ◽  
A A Kirsankin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Stainless Steel ◽  
Steel Wire ◽  
Stainless Steel Wire

Preparation of Electron Transparent Metal-Matrix Composites

1968 ◽  
Vol 26 ◽  
pp. 334-335 ◽  
Author(s):  
M. R. Pinnel ◽  
A. Lawley
Keyword(s):  
Stainless Steel ◽  
Load Transfer ◽  
Volume Fraction ◽  
Steel Wire ◽  
Initial Step ◽  
Interfacial Region ◽  
Matrix Composites ◽  
Specific Test ◽  
The Matrix ◽  
The One

Numerous phenomenological descriptions of the mechanical behavior of composite materials have been developed. There is now an urgent need to study and interpret deformation behavior, load transfer, and strain distribution, in terms of micromechanisms at the atomic level. One approach is to characterize dislocation substructure resulting from specific test conditions by the various techniques of transmission electron microscopy. The present paper describes a technique for the preparation of electron transparent composites of aluminum-stainless steel, such that examination of the matrix-fiber (wire), or interfacial region is possible. Dislocation substructures are currently under examination following tensile, compressive, and creep loading. The technique complements and extends the one other study in this area by Hancock.The composite examined was hot-pressed (argon atmosphere) 99.99% aluminum reinforced with 15% volume fraction stainless steel wire (0.006″ dia.).Foils were prepared so that the stainless steel wires run longitudinally in the plane of the specimen i.e. the electron beam is perpendicular to the axes of the wires. The initial step involves cutting slices ∼0.040″ in thickness on a diamond slitting wheel.

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