Effect of Grain Size on the Stress Corrosion Cracking of Ultrafine Grained Cu-10 wt% Zn Alloy in Ammonia

Table 1

Processing recipes and grain size.

Sample	Deformation	Annealing	Grain size (μm)
1	None	None	38.0
2	CR 50%	673 K-60 min	12.6
3	CR 50%	623 K-60 min	3.30
4	ECAP 2 pass	623 K-15 min	1.10
5	ECAP 2 pass	623 K-10 min	0.71
6	ECAP 2 pass	623 K-5 min	0.44
7	ECAP 8 pass	473 K-10 min	0.15
8	ECAP 8 pass	473 K-1 min	0.12
9	ECAP 8 pass		0.12