评述了铝硅活塞合金的种类，化学成分，晶粒细化，变质处理，合金化和热处理工艺等优化手段。
It reviews the optimization measures of Al-Si piston alloy, including kinds, chemical composition, grain refinement, modification, alloying and heat treatment.
退火晶化后，各试样中析出相的种类、数量、晶粒尺寸等有明显的不同。
After annealing crystallization, there are some obvious differences in the variety, the amount and size of crystallization.
主要介绍了细晶粒与超细晶粒硬质合金和Ti（C，N）基与TiC基硬质合金的种类和性能，并列入一些试验数据。
The kinds and their properties of fine and ultrafine grain cemented carbides and cermet carbides are introduced in this paper. Some cutting test data are listed.
主要介绍了细晶粒与超细晶粒硬质合金和Ti（C，N）基与TiC基硬质合金的种类和性能，并列入一些试验数据。
The kinds and their properties of fine and ultrafine grain cemented carbides and cermet carbides are introduced in this paper. Some cutting test data are listed.
应用推荐