## Mechanical metallurgy |

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Page 273

Chapter 10 THE

with the wide acceptance and the use that have been given the tension test.

However, it is useful in many engineering applications and also in theoretical

studies ...

Chapter 10 THE

**TORSION**TEST 10-1. Introduction The**torsion**test has not metwith the wide acceptance and the use that have been given the tension test.

However, it is useful in many engineering applications and also in theoretical

studies ...

Page 278

Types of

the surface of a bar subjected to

two mutually perpendicular planes, perpendicular to the longitudinal axis ^max

Fig.

Types of

**Torsion**Failures Figure 10-4 illustrates the state of stress at a point onthe surface of a bar subjected to

**torsion**. The maximum shear stress occurs ontwo mutually perpendicular planes, perpendicular to the longitudinal axis ^max

Fig.

Page 279

A study of

fracture started on planes of maximum shear stress up to a Vickers hardness of

720 and that above this hardness tensile stresses were responsible for starting ...

A study of

**torsion**failures in a tool steel as a function of hardness1 showed thatfracture started on planes of maximum shear stress up to a Vickers hardness of

720 and that above this hardness tensile stresses were responsible for starting ...

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### Contents

Introduction | 3 |

Stress and Strain Relationships for Elastic Behavior | 17 |

Elements of the Theory of Plasticity | 54 |

Copyright | |

21 other sections not shown

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### Common terms and phrases

alloys angle annealing ASTM axis behavior bending billet brittle fracture Burgers vector cent compressive constant crack creep rate cycles decrease determined diameter direction dislocation line distribution drawing ductile edge dislocation effect elastic equation extrusion factor failure fatigue limit flow curve flow stress force forging forming friction given grain boundaries hardness high-temperature increase indentation lattice length load longitudinal mandrel martensite material maximum measured mechanical metallurgical Metals Park method modulus notch obtained occurs orientation particles plastic deformation pressure principal stresses Proc produced properties punch quenched radius ratio region relationship residual stresses rolling screw dislocations shear stress sheet shown in Fig shows single crystals slip plane Society for Metals specimen steel strain energy strain hardening strain rate stress-strain curve structure surface temper tensile strength tensile stress tension theory thickness tion torsion Trans transition temperature tube usually yield strength yield stress