## Deformation and fracture mechanics of engineering materialsUpdated to reflect recent developments in our understanding of deformation and fracture processes in structural materials. This completely revised reference includes new sections on isostress analysis, modulus of rupture, creep fracture micromechanicsms, and many more. |

### From inside the book

Results 1-3 of 86

Page 200

Tien and coworkers ' have suggested that these apparent differences in creep

response can be rationalized by considering creep to be dominated by an

effective stress rather than the

dispersion strengthening particles. When the

the effective stress value in Eq. 5-20, the stress dependency of es and the

apparent ...

Tien and coworkers ' have suggested that these apparent differences in creep

response can be rationalized by considering creep to be dominated by an

effective stress rather than the

**applied stress**; the effective stress is defined as the**applied stress**minus a back stress that reflects dislocation interactions with Y203dispersion strengthening particles. When the

**applied stress**level is replaced bythe effective stress value in Eq. 5-20, the stress dependency of es and the

apparent ...

Page 340

If the yield strength of the material is 1400 MPa, what is the plastic-zone size and

the effective

infinitely large, ry may be determined from Eqs. 8-28 and 8-40 so that 1 [350^(

0.008)1 no5 rv «• — 7—5 ~ 0.25 mm y 2ttL 14002 J Since r/a is very small, it

would not be expected that KeSf would greatly exceed

-45 350Vt(0.008) K<" = [1 - V2(350/1400)^ = 56 4 MPaVm" which is only about 2

% greater than ...

If the yield strength of the material is 1400 MPa, what is the plastic-zone size and

the effective

**stress**-intensity level at the crack tip? Assuming the plate to beinfinitely large, ry may be determined from Eqs. 8-28 and 8-40 so that 1 [350^(

0.008)1 no5 rv «• — 7—5 ~ 0.25 mm y 2ttL 14002 J Since r/a is very small, it

would not be expected that KeSf would greatly exceed

**Applied**- In fact, from Eq. 8-45 350Vt(0.008) K<" = [1 - V2(350/1400)^ = 56 4 MPaVm" which is only about 2

% greater than ...

Page 526

12.5, the fracture surface may exhibit any one of several patterns, depending on

such factors as the

sites. For example, we see that as the severity of a design-imposed stress

concentration and/or the

and associated ratchet lines increase. Either of these conditions should be

avoided if at all possible. In fact, most service failures exhibit only one nucleation

site, which ...

12.5, the fracture surface may exhibit any one of several patterns, depending on

such factors as the

**applied stress**and the number of potential crack nucleationsites. For example, we see that as the severity of a design-imposed stress

concentration and/or the

**applied stress**increases, the number of nucleation sitesand associated ratchet lines increase. Either of these conditions should be

avoided if at all possible. In fact, most service failures exhibit only one nucleation

site, which ...

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#### LibraryThing Review

User Review - all4metals - LibraryThingThis is one of the best textbooks on physical metallurgy. My preference is for Dieter's book, but that is because it was the textbook for my physical metallurgy course in graduate school. Hertzberg's book is more modern. Read full review

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### Common terms and phrases

addition alloy aluminum alloy applied stress associated ASTM atom behavior brittle Burgers vector ceramics Chapter component composite constant crack growth rate crack length crack propagation crack tip craze creep rate crystal crystalline curve cycles cyclic decrease depends elastic elastic modulus embrittlement engineering example failure fatigue crack fibers FIGURE flaw fracture mechanics fracture surface fracture toughness given grain boundary hardening increasing initial lattice load martensite material matrix maximum Metals Park microstructure modulus MPaVm notch Note occur oriented parameter particles phase plane-strain plastic deformation plastic zone plate polymer polymeric R. W. Hertzberg region relation relative Reprinted with permission response result rupture sample screw dislocation Section shear stress shown in Fig specimen stacking fault energy steel alloys strain rate strengthening stress concentration stress field stress intensity factor stress level stress-strain stress-strain curve superalloys thermal thickness Trans transition temperature twinning values yield strength