A resistivity study of 7012 Al−Zn−Mg alloy commercial tempers
A resistivity study of 7012 Al−Zn−Mg alloy commercial tempers
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DOI：
10.1016/0167-577x(87)90060-7
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发表时间：
1987-10
影响因子：
3
通讯作者：
S. Abis;G. Riontino
中科院分区：
文献类型：
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作者：
S. Abis;G. Riontino
在连续升温过程中，对AA 7012 Al-Zn-Mg合金的一系列商业状态进行了电阻测量。结果证实了先前获得的DSC数据，即在T4和T6回火中存在Guinier-Preston区结构，并且在T6和T73回火中存在“MgZn 2”半共格沉淀。它表明，电阻率测量可以提供有关沉淀的相干GP区的补充信息，区分相干和半相干或不相干的沉淀物。
Electrical resistance measurements, performed during continuous temperature rise, have been carried out on a series of commercial tempers of the AA 7012 Al-Zn-Mg alloy. Results confirmed previously obtained DSC data about the presence of a Guinier-Preston zone structure in T4 and T6 tempers, and η'(MgZn2) semicoherent precipitates in T6 and T73 tempers. It is demonstrated that the electrical resistivity measurements can supply complementary information about the precipitation of coherent GP zones, discriminating between coherent and semicoherent or incoherent precipitates.