Ageing Behaviour of Spray Cast Al-Zn-Mg-Cu Alloys

Elmas SALAMCI

Makale detayları

Ageing Behaviour of Spray Cast Al-Zn-Mg-Cu Alloys

Yazarlar:

Elmas SALAMCI

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Engineering and Environmental Sciences 2001 Vol.25 Issue 6, pp.681-687

Belge Tipi:

Makale

Yayın Tarihi:

5/2001

Belge Dili:

Türkçe

Document ID (Org No.):

2000745221

Sıklık:

Üç Yıllık

eISSN:

1303-6157

pISSN:

1300-0160

Özet:

 

Three 7xxx series aluminium SS70, N707 and 7075 alloys  containing copper, zinc and magnesium were spray deposited using rapid  solidification.  Ageing of the 7075 alloy resulted in a peak  hardnesses of 147, 186 and 191 MPa after 2, 24 and 48 h at  temperatures of 175oC, 130oC and 120oC  respectively.  The other two alloys, SS70 and N707, were aged at  120oC, and both reached peak hardness after 24 h; SS70 had a  peak hardness of 229 MPa and N707 of 228 MPa.  A double ageing  treatment at 105oC for 5 h then at 175oC for 1 h  significantly increased the peak hardness to 185.6 MPa compared to a  single stage of ageing at the higher temperatures in the 7075 alloy.   TEM analysis of aged specimens revealed two types of precipitate that  contributed to age hardening: h' and h (MgZn2).

 

Three 7xxx series aluminium SS70, N707 and 7075 alloys  containing copper, zinc and magnesium were spray deposited using rapid  solidification.  Ageing of the 7075 alloy resulted in a peak  hardnesses of 147, 186 and 191 MPa after 2, 24 and 48 h at  temperatures of 175oC, 130oC and 120oC  respectively.  The other two alloys, SS70 and N707, were aged at  120oC, and both reached peak hardness after 24 h; SS70 had a  peak hardness of 229 MPa and N707 of 228 MPa.  A double ageing  treatment at 105oC for 5 h then at 175oC for 1 h  significantly increased the peak hardness to 185.6 MPa compared to a  single stage of ageing at the higher temperatures in the 7075 alloy.   TEM analysis of aged specimens revealed two types of precipitate that  contributed to age hardening: h' and h (MgZn2).

Makale detayları

Ageing Behaviour of Spray Cast Al-Zn-Mg-Cu Alloys

Yazarlar: Elmas SALAMCI

Yayıncı: TUBITAK

Dergi: Turkish Journal of Engineering and Environmental Sciences 2001 Vol.25 Issue 6, pp.681-687

Belge Tipi: Makale

Yayın Tarihi: 5/2001

Belge Dili: Türkçe

Document ID (Org No.): 2000745221

Sıklık: Üç Yıllık

eISSN: 1303-6157

pISSN: 1300-0160

Sayı

Yazarlar:

Elmas SALAMCI

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Engineering and Environmental Sciences 2001 Vol.25 Issue 6, pp.681-687

Belge Tipi:

Makale

Yayın Tarihi:

5/2001

Belge Dili:

Türkçe

Document ID (Org No.):

2000745221

Sıklık:

Üç Yıllık

eISSN:

1303-6157

pISSN:

1300-0160