Mechanical properties and microstructural evaluation of AA1100 to AZ31 dissimilar friction stir welds

Azizieh, M.; Alavijeh, Alireza Sadeghi; Abbasi, Majid; Balak, Zohre; Kim, H.S.

doi:10.1016/j.matchemphys.2015.12.046

Cited by 68 publications

(35 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, when the tool was offset to Mg alloy, preferred weld quality was obtained There were two aspects related to the production of the defects: materials flow and IMCs. Because the friction between Al alloy and tool was greater than that of Mg alloy [18], when the tool is located in the side of aluminum, heat generated was larger. This would lead to more formation of IMCs, which could lead to hot crack in the following cooling [19].…”

Section: Macromorphologies Of the Jointsmentioning

confidence: 99%

“…This materials transfer was important for desired joint. Mg alloy has relative higher shear strength and lower ductility compared with Al alloy due to its HCP structure [18], so when no tool offset was placed in Mg, the transferred materials motivated by the tool were probably not enough, so cavities and tunnel defects appeared due to the insufficient material flow. However, when the tool offset reached 2.5 mm for T7, the center of the pin would deviate far from the butt surface, which could result in release of stirring effect and decrease the flowing extent of the welding materials, thus microvoid would appear.…”

Section: Macromorphologies Of the Jointsmentioning

confidence: 99%

“…However, with the increase of offset, the diffraction peak of Al 3 Mg 2 disappeared gradually, while that of Al 12 Mg 17 changed little. The formation of IMCs indicated that the temperature had exceeded the melting point of the metals in the stirring zone[18], even the offset to Mg have elevated the translating temperature because of the increased content of Mg in that zone. However, Stirring zone (SZ) would move toward Mg matrix side when the offset was present, so the relative content of Al decreased in this area, which would be in favor of formation of Al 12 Mg 17 .Metals 2020, 10, x FOR PEER REVIEW 5 of 10…”

mentioning

confidence: 99%

See 2 more Smart Citations

Effect of Tool Offset on the Microstructure and Properties of AA6061/AZ31B Friction Stir Welding Joints

Liu

Chen

et al. 2020

Metals

View full text Add to dashboard Cite

Friction stir welding was carried out on AA6061/AZ31B alloy, and the influence of tool offset on microstructures and mechanical properties of the joints was studied. The results showed that preferred properties were obtained when Mg was placed in the Advancing Side (AS) and offset was positioned into Mg. The distribution of Al3Mg2 and Al12Mg17 intermetallic compounds (IMCs) could be improved with offset in a certain range. The tensile strength of the joints was elevated with the increase of the offset due to the superior distribution and diminished size of IMCs, and when the offset was 1.5 mm, the joint strength reached the maximum value of 107 MPa. The microhardness of the stirring zone decreased with the increased offset.

show abstract

Section: Macromorphologies Of the Jointsmentioning

confidence: 99%

Section: Macromorphologies Of the Jointsmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Effect of Tool Offset on the Microstructure and Properties of AA6061/AZ31B Friction Stir Welding Joints

Liu

Chen

et al. 2020

Metals

View full text Add to dashboard Cite

show abstract

“…Thus, FSW has high possibility of welding Al and Mg alloys compared to fusion welding. Much work has been carried out on the FSW of Al to Mg in butt joint [7,8,9]. Hirano et al [10] previously reported that dissimilar FSW joints of 5182 Al and AZ31 Mg with a same thickness of 1.2 mm were successfully obtained.…”

Section: Introductionmentioning

confidence: 99%

Formation Investigation of Intermetallic Compounds of Thick Plate Al/Mg Alloys Joint by Friction Stir Welding

Mao

et al. 2019

Materials

View full text Add to dashboard Cite

5A06 Aluminum (Al) alloy and AZ31B magnesium (Mg) alloy with 20 mm thickness were successfully butt joined by friction stir welding. In order to control the composition of Al and Mg alloys along thickness direction, an inclined butt joint was designed in this study. The microstructure and phase identification at the interface of Al/Mg joints were examined using scanning electron microscopy with an energy-dispersive spectroscopy and Micro X-ray diffraction. The results indicated that there were two different formation mechanisms of intermetallic compounds at the interface of thick plate Al/Mg joint. The first was constitutional liquation, and eutectic structure consisting of Al12Mg17 and Mg solid solution existed at the top and upper-middle of the Mg side interface. The second was diffusion reaction, and the two sub-layers of Al12Mg17 and Al3Mg2 formed at the lower middle and bottom of the Mg side interface. In addition, the diffusion thickness values of Al12Mg17 and Al3Mg2 layers decreased gradually from the lower middle to bottom of the Mg side interface. As the position changes from the middle to the bottom near the Mg side interface, the diffusion coefficient of Al3Mg2 phase rapidly decreases from 3.14 × 10−12 m2/s to 6.9 × 10−13 m2/s and the diffusion coefficient of Al12Mg17 phase decreases from 6.8 × 10−13 m2/s to 1.5 × 10−13 m2/s.

show abstract

“…Kaynak hatalarının magnezyum alaşımı tarafında oluşmasının bir diğer sebebi ise her iki alaşımın farklı atomik yapıya sahip olmasındandır. Al alaşımları yüzey merkezli kübik yapıya sahip iken Magnezyum alaşımları sıkı düzen hegzagonal yapıya sahiptirler [30,31]. Hegzagonal sıkı düzen atomik yapı yüzey merkezli kübik yapıya göre daha zor plastik deformasyona uğramaktadır.…”

Section: Gi̇ri̇ş (Introduction)unclassified

AA7075-T6 ve AZ31B Alaşımlarının Sürtünme Karıştırma Kaynağı Üzerinde Ön Isıtma ve Kuru Buz Soğutmasının Etkisi

Bilgin¹,

Karabulut²,

Özdemır³

2018

Journal of Polytechnic

View full text Add to dashboard Cite

show abstract

Mechanical properties and microstructural evaluation of AA1100 to AZ31 dissimilar friction stir welds

Cited by 68 publications

References 34 publications

Effect of Tool Offset on the Microstructure and Properties of AA6061/AZ31B Friction Stir Welding Joints

Effect of Tool Offset on the Microstructure and Properties of AA6061/AZ31B Friction Stir Welding Joints

Formation Investigation of Intermetallic Compounds of Thick Plate Al/Mg Alloys Joint by Friction Stir Welding

AA7075-T6 ve AZ31B Alaşımlarının Sürtünme Karıştırma Kaynağı Üzerinde Ön Isıtma ve Kuru Buz Soğutmasının Etkisi

Contact Info

Product

Resources

About