Flow stress

Flow stress

Flow stress is defined as the instantaneous value of stress required to continue deforming the material - to keep the metal flowing. It is the Yield Strength of the metal as a function of strain, which can be expressed: [1]

Yf = Ke^n

Yf = Flow stress, MPaK = Strength Coefficient, MPan = Strain hardening exponent

Hence, Flow stress can also be defined as the stress required to sustain plastic deformation at a particular strain.

The flow stress is a function of plastic strain.

Metal Properties that have an effect on flow stress [ [http://www.metalpass.com/metaldoc/paper.aspx?docID=3 Flow Stress ] ] .

a) Chemical composition

b) Purity

c) Crystal structure

d) Phase constitution

e) Exit microstructure

f) Grain size

g) Heat treatment state

References

[1] Mikell P. Groover, 2007, "Fundamentals of Modern Manufacturing; Materials, Processes, and Systems," Third Edition, John Wiley & Sons Inc.


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Flow stress — Flow stress. См. Напряжения текучести. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • flow stress — Смотри напряжение течения …   Энциклопедический словарь по металлургии

  • Stress (physics) — Stress is a measure of the average amount of force exerted per unit area. It is a measure of the intensity of the total internal forces acting within a body across imaginary internal surfaces, as a reaction to external applied forces and body… …   Wikipedia

  • Stress ulcer — Stress ulcers are single or multiple mucosal defects which can become complicated by upper gastrointestinal bleeding during the physiologic stress of serious illness. Ordinary peptic ulcers are found commonly in the gastric antrum and the… …   Wikipedia

  • Stress testing — is a form of testing that is used to determine the stability of a given system or entity. It involves testing beyond normal operational capacity, often to a breaking point, in order to observe the results. Stress testing may have a more specific… …   Wikipedia

  • flow — vb issue, emanate, proceed, stem, derive, *spring, arise, rise, originate Analogous words: emerge, *appear, loom: start, *begin, commence flow n Flow, stream, current, flood, tide, flux are comparable when meaning something issuing or moving in a …   New Dictionary of Synonyms

  • flow — ► VERB 1) move steadily and continuously in a current or stream. 2) move or issue forth steadily and freely: people flowed into the courtyard. 3) (often as adj. flowing) hang loosely and elegantly. 4) (of the sea or a tidal river) move towards… …   English terms dictionary

  • stress — stressless, adj. stresslessness, n. /stres/, n. 1. importance or significance attached to a thing; emphasis: to lay stress upon good manners. 2. Phonet. emphasis in the form of prominent relative loudness of a syllable or a word as a result of… …   Universalium

  • Flow (Psychologie) — Dieser Artikel wurde aufgrund von inhaltlichen Mängeln auf der Qualitätssicherungsseite des Wikiprojekts Psychologie eingetragen. Dies geschieht, um die Qualität der Artikel aus dem Themengebiet Psychologie auf ein akzeptables Niveau zu bringen.… …   Deutsch Wikipedia

  • Stress — Forces from the outside world impinging on the individual. Stress is a normal part of life that can help us learn and grow. Conversely, stress can cause us significant problems. Stress releases powerful neurochemicals and hormones that prepare us …   Medical dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”