- Aug 20 Mon 2007 10:05
這位大同教授說 "鋼材沒問題"
- Aug 19 Sun 2007 17:31
晶粒粗大 H13 ( ~ 61)
- Aug 19 Sun 2007 16:38
素材不良 K340 GBK
- Aug 18 Sat 2007 23:01
鋁合金 前叉 1984
- Aug 18 Sat 2007 21:57
耐磨鋼極品---P/M 鋼材
1000X
1000X
- Aug 18 Sat 2007 21:41
鑄鋼的(樹枝晶)凝固痕跡
A:200x- Aug 18 Sat 2007 14:17
晶界為氣體原子擴散優先路徑 preferred path for diffusion
- Aug 18 Sat 2007 14:05
氫 脆裂 hydrogen induced cracks
1985年 所做檢驗. Inspected in 1985 . A bent-and-welded loop, pickled and hot-dip zinc coated. All loops cracked open after hot-dip zinc coating . Tensile stress induced after bending the loop. H atoms were picked-up during pickling. Upon hot-dipping of zinc, H atoms diffused to grain boundaries and form H2 and expanded and, cracked open the loop.
- Aug 18 Sat 2007 13:43
FCD 鑄鐵中的內部白口 inverse chill
