Architecturally modified Al–DRA composites: the effect of size and shape of the DRA rods on fracture behavior

Jamali, Mirmosadegh; Farokhzadeh, K.; Bagheri, Reza; Reihani, S.M. Seyed

doi:10.1007/s10853-010-4273-2

Cited by 4 publications

(1 citation statement)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…So far, it has not provided the necessary level of toughness enhancement while retaining the abrasion resistance of the layers [9]. Published experimental results indicate that local particle reinforcement distribution patterns can play a very significant role in controlling HPRMMC properties as well as damage tolerance [10,11,12]. This method may provide a reference for the toughness improvement of HPRMMC layers.…”

Section: Introductionmentioning

confidence: 99%

Effects of CTCP Modification on Microstructure and Wear Behavior of CTCP-NiCrBSi/Heat Resistant Steel Composite Layer

Zhang

Hou

2018

Materials

View full text Add to dashboard Cite

A CTCP-NiCrBSi/heat resistant steel composite layer was designed and fabricated by vacuum fusion sintering. The structure of the composite layer was similar to reinforced concrete. Numerous reinforced regions with a cylindrical shape were evenly distributed in the heat resistant steel. Modified cast tungsten carbide particles (CTCP) reinforced NiCrBSi matrix composite constituted the reinforced region (CTCP-NiCrBSi). The microstructure of the composite layers was investigated by scanning electron microscope (SEM), energy dispersive x-ray spectrometer (EDS), and image analysis. The wear behavior of the composite layer was estimated on the ring-on-disc rig at a temperature range of room temperature (RT) to 800 °C in air. The microstructure and wear behavior of the composite layer with modified CTCP were compared with those with primary CTCP. The results showed that the poor chemical resistance of W2C and the interdiffusion of elements were responsible for the dissolution of unmodified CTCP in the molten NiCrBSi alloy. A WC outer shell formed on the surface of the CTCP after surface carburizing modification. The WC outer shell could effectively resist the dissolution of CTCP in NiCrBSi during the sintering process. The content of WC/W2C in modified CTCP-NiCrBSi increased by about 12.0 vol. % when compared with that in the primary CTCP-NiCrBSi. The wear rate of the composite layer with modified CTCP was lower than that with primary CTCP between RT and 700 °C. The wear rates of the composite layer decreased with increasing temperature from RT to 700 °C and increased above 700 °C.

show abstract

Section: Introductionmentioning

confidence: 99%