Microstructural evolution and tensile mechanical properties of AM60B magnesium alloy prepared by the SIMA route

Zhao, Zhongxing; Chen, Qiang; Tang, Zejun; Hu, Chuankai

doi:10.1016/j.jallcom.2010.03.088

Cited by 59 publications

(13 citation statements)

References 25 publications

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“…However, little attention has been given to the influences of metallurgical segregation and the distribution of secondary phases. This study investigates the primary research results of Mg-Zn-Al-Ca alloy (ZAX1330) with high Zn (12.83 wt.%), low Al (3.35 wt.%), and trace Ca (0.20 wt.%) on the evolution of microstructure, using SIMA (strain induced melting activation) heat treatment [21] creates an extremely segregated microstructure (Ca atoms gather) compared with the solid-solution (T4) microstructure and the transitional microstructure to investigate the biodegradable characteristics. In addition, the mechanical properties, corrosion behavior and cytocompatibility of Mg-Zn-Al-Ca alloy (ZAX1330) have also been studied in four kinds of microstructure by using different heattreatments.…”

Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%

Heat treatment mechanism and biodegradable characteristics of ZAX1330 Mg alloy

Lin

Hung

Lui

et al. 2015

Materials Science and Engineering: C

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Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%

Heat treatment mechanism and biodegradable characteristics of ZAX1330 Mg alloy

Lin

Hung

Lui

et al. 2015

Materials Science and Engineering: C

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“…[7][8][9] In recent years, SPD techniques are widely applied in producing the UFG structures in bulk metallic alloys. [10][11][12][13][14] Equal channel angular pressing (ECAP), 15,16 high pressure torsion (HPT), equal channel angular rolling (ECAR), [18][19][20] constrained groove pressing, [21][22][23][24][25] non-equal channel angular pressing 26 and cyclic close die forging (CCDF) 27 are some of the SPD processes which have been recently investigated.…”

Section: Introductionmentioning

confidence: 99%

The effects of combined cyclic close die forging and aging process on microstructure and mechanical properties of AA7075

Moazam

Honarpisheh

2020

Proceedings of the Institution of Mechanical Engineers, Part L:

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It is well known that applying severe plastic deformation methods on the precipitation hardenable aluminum alloys at room temperature is very difficult because of crack formation and segmentation of the specimen during the processes. In this study, several procedures were experimentally examined for performing the cyclic close die forging (CCDF) and improving the mechanical properties of AA7075. The experimental tests revealed that supersaturated solid solution of AA7075 after water quenching is formable for only about 5 min and performing the CCDF process in this limited time is possible. Optical and scanning electron microscopy and transmission electron microscopy were used to study the microstructure of the processed samples. It was observed that by applying two passes of CCDF, the grain size of the material reduced from 30 µm to about 200–300 nm. In addition, the X-ray diffractometer results demonstrated that Guinier–Preston zone picks of the processed samples are very weak and the equilibrium η-phase does not exist in none of the suggested procedures. Furthermore, it was found that by combining CCDF and aging processes according to the proposed procedures, the mechanical properties of the processed AA7075 were improved when compared with the AA7075-T6. To put it more clearly, micro-hardness, yield strength and ultimate tensile stress of the processed sample were improved as much as 38.6%, 25% and 23%, respectively.

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“…They found that high-quality semi-solid billet can be prepared by ve-pass equal channel angular extrusion and subsequent SSIT at 560 C for 15 min. Zhao et al 18) used cyclic closed-die forging in SIMA to process AM60B magnesium alloy. They observed that the ne microstructure can be prepared by four-pass cyclic closed-die forging and partial remelting at 580 C for 10 min.…”

Section: Introductionmentioning

confidence: 99%

Grain Refinement of Aluminum Alloy Bar by a Modified RAP Process for Semi-Solid Forming

2017

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A modi ed Recrystallization and Partial Melting (RAP) process including Radial Forging (RF) and Semi-Solid Isothermal Treatment (SSIT) was proposed to re ne the grains of 6063 Al alloy bar for semi-solid forming. The 6063 Al alloy bar (φ120 mm × 800 mm) was deformed by RF into a stepped shaft with different Area Reduction Ratios (ARRs) at the temperature of 300 C, and then the samples cut from both the central and peripheral parts of the RF-deformed bar were treated with SSIT at 630 C for 10 min. The effect of ARR on the microstructural evolution of semi-solid 6063 Al alloy was investigated. Results showed that, during the RF process, the microstructures of the samples became denser as the ARR increased. After SSIT, with the increase of ARR, the average grain sizes of both the central and peripheral parts were reduced and the spheroidization degrees of both the central and peripheral parts were improved. The variation tendency of grain size experienced three different stages: precipitous reduction, gentle reduction and unobvious change. Besides, the differences between grain sizes of the peripheral and central parts were gradually decreased with the increase of ARR. Additionally, the optimal process parameter for re ning grains was 70% ARR at 630 C for 10 min.

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Microstructural evolution and tensile mechanical properties of AM60B magnesium alloy prepared by the SIMA route

Cited by 59 publications

References 25 publications

Heat treatment mechanism and biodegradable characteristics of ZAX1330 Mg alloy

Heat treatment mechanism and biodegradable characteristics of ZAX1330 Mg alloy

The effects of combined cyclic close die forging and aging process on microstructure and mechanical properties of AA7075

Grain Refinement of Aluminum Alloy Bar by a Modified RAP Process for Semi-Solid Forming

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