Urangua Jargalsaikhan

Postgraduate Research Student, Teaching Assistant

Academic and research departments

Faculty of Engineering and Physical Sciences.


Hongbo Wan, NATHANAEL HO LEUNG, URANGUA JARGALSAIKHAN, Eric Ho, Chaolin Wang, Qiang Liu, Hua-Xin Peng, Bo Su, TAN SUI (2022)Fabrication and Characterisation of Alumina/aluminium Composite Materials with a Nacre-like Micro-layered Architecture, In: Materials & design223111190

Many natural materials demonstrate ideal design inspirations for the development of lightweight composite materials with excellent damage tolerance. One notable example is the layered architecture of nacre, which possesses toughness an order of magnitude higher than its constituent parts. Man-made nacre-like ceramic/polymer composites obtained through direct infiltration of polymer in ceramic scaffolds have been shown to produce improved mechanical properties over other composite architectures. Replacing the polymer phase with metal could provide higher damage tolerance but the infiltration of metal into complex ceramic scaffolds is difficult due to the surface tension of molten metal. To address this, bioinspired nacre-like micro-layered (µL) alumina scaffolds with different ceramic fractions from 18 to 85% were infiltrated with aluminium alloy 5083 via pressureless and squeeze casting infiltrations techniques. The scaffolds were created using a bi-directional freeze-casting and one-step densification method. As a result, the µL alumina/aluminium composites displayed significant extrinsic toughening mechanisms with both high strength and toughness. The mechanical performance was highly dependent on the interface, microstructure, and composition. The nacre-like composites with 18% alumina and AlN interface displayed a maximum resistance‐curve toughness up to around 70 MPa.m½ (35 MPa.m½ at the ASTM limit) and a flexural strength around 600 MPa.

JINGYI MO, NATHANAEL HO LEUNG, URANGUA JARGALSAIKHAN, Hongbo Wan, Bin Zhu, Bo Su, TAN SUI (2022)Advanced microscopic characterisation of multi-scale high-resolution mechanical behaviour of a nacre-inspired composite, In: Composites Communications35101315 Elsevier