Aluminum 7175 Alloy: Composition, Mechanical Properties, and …
2024年11月18日 · The microstructure of aluminum 7175 changes with solution treatment, quenching, and aging process. In solution treatment, the alloy elements are dissolved, and in aging, precipitation of fine particles is done, which increases the strength.
Microstructural evolutions of newly developed ECO-7175 aluminum …
2020年8月5日 · In this study, the effect of the elimination of Cr on the microstructural evolutions of ECO-7175 alloy during hot deformation is investigated. ECO-7175 alloys with and without Cr were subjected to hot compression at 350, 400, 450, and 500 °C …
热处理对体育器械用SLM制备7175铝合金组织性能的影响
摘要： 通过光学显微镜 (OM)、扫描电镜 (SEM)、透射电镜 (TEM)及显微硬度计对选择性激光熔融 (SLM)制备的7175铝合金经过固溶与双级时效处理后的显微组织、硬度及相变进行了探究。 试验结果表明,未经处理的7175合金显微组织展现出显著的通道间非均匀性,而经过固溶与双级时效处理后,该合金表现出均匀且细小的显微组织,通道结构消失。 热处理后合金的硬度相较于热处理前 (83 HV0.3)有所提高,平均达到约162 HV0.3。 晶界处的沉淀S相 (Al 2 CuMg)及θ相 (Al 2 Cu)为合 …
时效时间对7175铝合金组织和力学性能的影响 - jsrcl.net
2024年3月30日 · 摘要： 采用光学显微镜 (OM)、扫描电镜 (SEM)、透射电镜 (TEM)、维氏硬度计和万能拉伸试验机系统研究了7175铝合金在120 ℃时效过程中的微观组织变化和力学行为。 结果表明,经固溶和时效处理后,7175铝合金组织为典型纤维状组织,未产生明显再结晶,晶粒形貌和第二相在时效过程中无明显差异。 随着时效时间的延长,晶界处的析出相尺寸逐渐变大,晶内析出相粒径变大,平均粒径由5.87 nm变为8.38 nm。 7175铝合金在120 ℃时效时,硬度在16 h达到峰值,峰值硬 …
Microstructural evolutions of newly developed ECO-7175 aluminum …
2020年8月5日 · ECO-7175 alloys with and without Cr were subjected to hot compression at 350, 400, 450, and 500 °C and strain rates of 0.001, 0.01, 0.1, and 1 s −1. The microstructural evolutions of the alloys were studied through Optical Microscopy, Scanning Electron Microscopy, Scanning Transmission Electron Microscopy , and Electron Backscatter ...
固溶处理对7175铝合金组织和力学性能的影响 - jsrcl.net
Effect of solution treatment on microstructure and mechanical properties of 7175 aluminum alloy Zhao Zhongchao 1,2, Ji Qingtao 1,2, Cao Shanpeng 1, Tang Hezhuang 1, Li Binliang 3, Niu Boya 3, Sun Youzheng 1,4
The microstructural characterization (SEM,EDS) of the AA 7175 aluminum alloy has indicated the presence of different phases formed during the primary processing of large ingots (casted in Wagstaff installation) intended for furher
Microstructural characterization of AA - 7175 alloy slabs
2009年1月1日 · The microstructural characterization (SEM, EDS) of the AA 7175 aluminum alloy has indicated the presence of different phases formed during the primary processing of large ingots (casted in...
Influence of La additions on solidification and microstructure in …
2024年6月2日 · In this study, the influence of La additions on the solidification and microstructure of the alloy EN AW-7175 in the as-cast state is investigated. Thermodynamic calculations, DSC and SEM analyses were performed. Samples with La additions (0.05–0.17 mass%) were compared with a reference sample (0 mass% La).
Characterization of the Microstructure, Fracture, and Mechanical ...
2016年6月30日 · Microstructural, tensile, and fracture characterizations of cylindrically forged forms of aluminum alloys AA7085-O and AA7175-T7452 were performed. Mechanical and fracture properties were investigated along radial, circumferential, and longitudinal directions to determine directional dependency.