7楼: Originally posted by chenyuer at 2015-09-01 23:00:08
Please refer to the paper "Influence of hot pressing sintering temperature and time on microstructure and mechanical properties of TiB2 ceramics", there is an expression that describes the  ...

11楼: Originally posted by gnaw1417 at 2015-09-05 14:48:53
求原文！...

4楼: Originally posted by SecHunter at 2015-09-01 13:24:42
晶粒细度越大，其晶粒表面面积越大，表面能越大，发生应变的阻力项也就越大。同时由于其晶粒度大，塑性形变量会上升，塑性提升，因此压溃强度自然越大。一般来说不好算  知道个概念就行了。同时晶粒细度越细也会有坏 ...