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H.J. Jiang

Bio: H.J. Jiang is an academic researcher from Guilin University of Technology. The author has contributed to research in topics: Alloy & Damping capacity. The author has an hindex of 8, co-authored 15 publications receiving 179 citations.

Papers
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Journal ArticleDOI
TL;DR: In this article, friction stir processing was performed on an Al-Mg-Si alloy (AA 6082-T4) at a low tool rotation rate of 200 rpm, and good mechanical and damping properties were simultaneously obtained after FSP.

39 citations

Journal ArticleDOI
TL;DR: In this article, the authors presented an effective strategy for preparing Al alloys with excellent damping capacity and mechanical properties, including high strength and reasonable ductility, by adding 0.5 Sc to Al-35Zn-0.5Sc alloys.

37 citations

Journal ArticleDOI
TL;DR: In this article, the authors applied friction stir processing (FSP), and subsequent solid-solution treatment and aging to peak hardness (T6 treatment) on a 7055 Al alloy.

36 citations

Journal ArticleDOI
TL;DR: In this paper, the effects of friction stir processing (FSP) and addition of 0.25% (mass ratio) Sc on the microstructure, mechanical properties, and damping capacity of AA 7055 alloy were investigated.

35 citations

Journal ArticleDOI
TL;DR: In this paper, a binary Al-35Zn alloy was used for rolling and the grain refinement and dynamic precipitation were obtained in the rolled samples, mainly attributed to the special microstructure characterized by fine grains, low solid solubility and wetting interface between Al and Zn phases.

32 citations


Cited by
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Journal ArticleDOI
TL;DR: The effects of trace Er on the microstructural evolution and mechanical properties of newly designed Al-Zn-Mg-Cu-Zr alloys for drilling pipes were investigated in this article.
Abstract: The effects of trace Er on the microstructural evolution and mechanical properties of newly designed Al–Zn–Mg–Cu–Zr alloys for drilling pipes were investigated After homogenization, most of the eutectics dissolved into the matrix and some primary phases remained, including Al8Cu4Er, Al12(Mn,Cr), and Al3Ti Dispersed nano-sized Al3(Er,Zr) precipitates were formed in the Er-containing alloys after homogenization Following extrusion, solution and retrogression re-aging (RRA) treatment, the hardness and yield strength of the 010 wt% Er-containing alloy are increased by 14% (254 HV) and 127% (70 MPa) compared to the alloy without Er This improvement could be ascribed to the precipitation strengthening of fine Al3(Er,Zr) particles, which complemented the conventional η' phase precipitation strengthening The intergranular corrosion resistance of the RRA-treated alloy with the addition of 010 wt% Er was improved by 65% due to a lower amount of high angle grain boundaries The fracture and intergranular corrosion mechanisms in alloys with and without Er addition were linked to the respective grain structures

56 citations

Journal ArticleDOI
TL;DR: In this paper, the effect of solute clusters on strain hardening has been investigated by tracing the microstructure evolution during deformation through synchrotron X-ray diffraction and atom probe tomography, and the experimental evidence strongly suggest that dislocation multiplication dominates over the entire deformation process until failure in NA alloys.

40 citations

Journal ArticleDOI
TL;DR: In this article, the deformation mode dominated by dislocation glide at room temperature is transformed to that combined with dislocation gliding plus nanoscale twinning at liquid nitrogen (77 K).
Abstract: Al0.3CoCrFeNi high-entropy alloys (HEAs) with B2 ordered phase mainly precipitated at grain boundaries are obtained by cold rolling, annealing and aging treatment. Tensile experiments show that both CRSA (annealed at 1100 °C for 1 h) and CRSA-600-24 (annealed at 1100 °C for 1 h and subsequently aging treatment at 600 °C for 24 h) samples have excellent combinations of yield strength, tensile strength and tensile elongation at room temperature, and more importantly, simultaneous enhancements in strength and ductility at liquid nitrogen (77 K) are attained for the latter condition. Analyses reveal that after aging treatment, the precipitation of B2 phase with ultrafine-grained or even nanoscale sizes, as well as moderate grain refinement, yields the significant increase in tensile strength and fascinating tensile plasticity. By transmission electron microscopy (TEM) characterization, it is found that the deformation mode dominated by dislocation glide at room temperature is transformed to that combined with dislocation glide plus nanoscale twinning at 77 K. Moreover, the twinning-induced work hardening renders the onset of necking instability to a higher strain/stress value, which therefore improves the strength and ductility simultaneously.

38 citations

Journal ArticleDOI
TL;DR: In this article, the authors presented an effective strategy for preparing Al alloys with excellent damping capacity and mechanical properties, including high strength and reasonable ductility, by adding 0.5 Sc to Al-35Zn-0.5Sc alloys.

37 citations