快速超塑性的研究与应用

综述了高应变速率超塑材料种类、变形机理和应用技术的最新进展。高应变速率超塑材料主要是铝基复合材料及铝合金,最近,对镁合金、纳米材料、钛合金高应变速率超塑性能的研究也已开始。高应变速率超塑性在工业中的应用已经起步,例如快速超塑成形技术、一模多件技术等,可以实现中等批量、甚至大批量生产,但是主要集中在铝合金上。未来激光辅助超塑成形技术、电塑性辅助超塑成形技术值得期待。

Research and application of quick superplasticity

The recent development of the high strain rate superplasticity(HSRS) materials,its deformation mechanism and application technology were reviewed.This type of material includes Al alloy and Al based composite.Recently the investigation on the HSRS of Mg alloy,nanocrystalline material and Ti alloy has begun.The commercial application of HSRS has started,e.g.,quick superplastic forming,superplastic forming of several parts in one set of dies.Medium volume,even large volume productions have been realized by quick superplastic forming technology,although mainly for al-based alloy.In the future,laser induced superplastic forming,electric aided superplastic forming technology are to be expected.