grain growth


Also found in: Dictionary, Thesaurus, Medical, Legal, Financial, Wikipedia.
Related to grain growth: Recrystallization, hot working

grain growth

[′grān ‚grōth]
(metallurgy)
Enlargement of grains in a metal, usually through heat treatment.
(petrology)
Enlargement of some individual crystals in a monomineralic rock, producing a coarser texture. Also known as germination.
References in periodicals archive ?
Lux, "WC grain growth and grain growth inhibition in nickel and iron binder hardmetals," International Journal of Refractory Metals and Hard Materials, vol.
Besides, this temperature is still lower than the onset temperature for severe grain growth, (27) so the Al diffusion is also enhanced with the increasing temperature.
Since the nucleation of the twin-oriented domains takes place at the growth front of the crystal, the formation of the twin substructure is possible only if the grain growth takes place in the <111>crystallographic direction.
No difference was noted between control and source:sink manipulated plants for allocation of dry matter to straw of spike at the beginning of rapid grain filling stage, but maximum straw of spike dry matter after anthesis significantly decreased after source:sink manipulation (Tables 1 and 2), indicating that glumes and awns can be effective on grain growth during first half of seed filling period, but after this period, demand of kernel needs a stronger dry matter supporter, i.e.
Grain filling is also dependent on the metabolic competence of vegetative tissues, particularly of the flag leaf, in order to provide photo-assimilates to sustain grain growth. Between 60 and 90% of the C content in the panicle at the time of harvest is derived from photosynthesis of the flag leaf after heading (Yoshida, 1981).
According to ESL, use of a porous alumina weight or cover plate during the manufacturing process promotes creep flattening during the initial sintering process, without the grain growth experienced in a second firing.
The relative importance of assimilate supply, grain growth capacity and transport system.
Sugar beets and grain growth has stopped, but warmth and sun could yet save the plants.
Figure 5 shows that during annealing at 375 K some grain growth has occurred.
While nitrogen can be extracted from the soil, studies have shown that under drought conditions, nitrogen remobilisation from vegetative tissues is particularly important for grain growth.
By carefully controlling temperature and timing of the heating phase, the Johns Hopkins engineers allowed about 20-25 percent of the copper's crystals to grow to a larger size in a process called "abnormal grain growth." This non-uniform mix of grain sizes gives the new copper its coexisting high strength and ductility.