Quantitative metallography of precipitating and secondary phases after strengthening treatment of net shaped casting of Al-Zn-Mg-Cu (7000) alloys

被引：67
作者：
Ghiaasiaan, Reza [1 ]
Amirkhiz, Babak Shalchi [2 ]
Shankar, Sumanth [1 ]
机构：
[1] McMaster Univ, Dept Mech Engn, LMCRC, 1280 Main St West,JHE 310, Hamilton, ON L8S 4L7, Canada
[2] Nat Resources Canada, Canmet Mat, 183 Longwood South St, Hamilton, ON L8P 0A1, Canada
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2017年 / 698卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
Al-Zn-Mg-Cu (7000) alloys; TEM; SEM; EDS; Artificial Ageing (T6); Controlled Diffusion Solidification (CDS); Near net shape casting; NONISOTHERMAL HEAT-TREATMENTS; 2-STEP AGING TREATMENT; ALUMINUM-ALLOYS; MECHANICAL-PROPERTIES; YIELD STRENGTH; PROCESS MODEL; MICROSTRUCTURE; EVOLUTION; BEHAVIOR; DIFFRACTION;
D O I：
10.1016/j.msea.2017.05.047
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of a near net shaped casting of the Al-Zn-Mg-Cu (Al-7000) alloys on the size and distribution of the strengthening precipitates formed during the peak age (T6) heat treatment was investigated using analytical microscopy with SEM, XRD and high resolution TEM. The near net shaped components were produced using the Controlled Diffusion Solidification (CDS) technology coupled with the tilt pour gravity casting process. Three different alloys were selected from the Al-Zn-Mg-Cu family with three distinctive sum total of alloying elements (Zn +Mg + Cu = 4.3, 7.7 and 10.6 wt%). The uniaxial tensile yield strengths of these CDS cast alloys were also determined to be 279, 390 and 540 MPa, respectively. Further, the microstructural and uniaxial tensile properties of the CDS cast and wrought products of an Al-Zn-Mg-Cu alloy (AA7050) were also compared in this study.
引用
收藏
页码：206 / 217
页数：12
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