材料导论匹配.docx

1、Work or Strain harding(加工硬化):a way to change a metal alloy’s structure in order to alter its Properties by pertforming work on the metal itself.
2、Recrystallization(重结晶):the formation of a new ,strain free grain structure from that existing in a cold-worked metal upon heating the metal up through a critical temperature for a suitable period of time.
3、Hardenability(淬透性):the measure of the depth to which hardness can be attained in a metal parts.
4、Superplastic forming(SPF) (超塑性成形):very deep forming methods to be used that would normally rupture parts.
5、Case harding (表面硬化):only surface layer is harded, just like making up the casing, pared with inner structure that is not harded.
posite(复合材料):plex , solid posed of two or more materials that together, on a macroscopic scale ,form a useful product.
7、Whiskers(晶须):nearly perfect ,single crystals ranging in size from about um to 10 um in diameter and 3 um to 3 cm in length.
8、Continuous fiber(连续纤维):are essentially infinite in length and extend continuously throughout the matrix in posite materials.
9、Discontinuous fiber(不连续纤维):not less than 3mm in length and tend to orient themselves in the direction of resin flow as posite material is processed.
10、Preforms(型坯):custom-shaped, resin-bonded mats for reinforced of molded parts plex shapes. In other words, a preform is a bundle of fibers having the desired volume and ar