Influence of Lanthanum Addition on Microstructural and Mechanical Properties of Magnesium-Aluminium-Lithium-lanthanum Alloy Karpagam Academy of Higher Education (KAHE), Centre for Mate

Format:

Book

Conference/Event

Author/Creator:

Maṇivaṇṇan, Yas, author.

Contributor:

Daniel Das, A.

Marimuthu, S.

Suresh Balaji, R.

Vallimanalan, A.

Conference Name:

International Conference on Trends in Automotive Parts Systems and Applications (2023-12-21 : Kuniamuthur, Coimbatore, India)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2024

Summary:

Effect of Lanthanum addition on mechanical properties of LA93 along with its microstructural evolution has been analysed using optical microscopy, scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS). The phases of this alloy were identified by X-ray diffraction (XRD). La addition has resulted in a reformed semi continuous structure with a decrease in grain volume along the boundary. The morphology shows the formation of Al2La and Al3La phase while the AlLi in LA93 has decreased. At 1.5 wt% La addition, the maximum grain refinement is obtained. In LA93+xLa, the Al2La and Al3La appear as a white long stripy phase and a white large blocky phase, respectively, and contribute to the increased strength of the alloy. There is a clear distribution of intermetallic compounds along the grain boundary of α-Mg and inside the matrix. The ultimate tensile strength increases by 60% to 112 MPa and hardness increases by 48% when the La content is 1.5 wt%. This improvement can be attributed to the precipitation of intermetallic compounds and grain refinement of β-phase which impede the dislocation motion. The elongation also increased considerably with the lanthanum addition

Notes:

Vendor supplied data

Publisher Number:

2023-01-5183

Access Restriction:

Restricted for use by site license