Effect of Extrusion Process on Microstructure of B<sub>4</sub>C/Al-Si Composites

JIAN Min; FU Daogui; WANG Meiling; LI Gang; WANG Guanchun; ZOU Congpei

Volume 33 Issue S2

Mar. 2025

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Article Navigation > Nuclear Power Engineering > 2012 > 33(S2): 91-96

JIAN Min, FU Daogui, WANG Meiling, LI Gang, WANG Guanchun, ZOU Congpei. Effect of Extrusion Process on Microstructure of B4C/Al-Si Composites[J]. Nuclear Power Engineering, 2012, 33(S2): 91-96.

Citation:

JIAN Min, FU Daogui, WANG Meiling, LI Gang, WANG Guanchun, ZOU Congpei. Effect of Extrusion Process on Microstructure of B₄C/Al-Si Composites[J]. Nuclear Power Engineering, 2012, 33(S2): 91-96.

JIAN Min, FU Daogui, WANG Meiling, LI Gang, WANG Guanchun, ZOU Congpei. Effect of Extrusion Process on Microstructure of B4C/Al-Si Composites[J]. Nuclear Power Engineering, 2012, 33(S2): 91-96.

Citation:

JIAN Min, FU Daogui, WANG Meiling, LI Gang, WANG Guanchun, ZOU Congpei. Effect of Extrusion Process on Microstructure of B₄C/Al-Si Composites[J]. Nuclear Power Engineering, 2012, 33(S2): 91-96.

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Effect of Extrusion Process on Microstructure of B₄C/Al-Si Composites

Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu, 610041, China

Received Date: 2012-09-12
Rev Recd Date: 2012-12-12

Available Online: 2025-03-08

Abstract

Abstract

B₄C/Al-Si composites were prepared by hot extrusion process with Al-Si alloy powder and B₄C powder as raw material.Effect of extrusion process on microstructure of the composites was studied.The results show that B₄C particles distribute uniformly in Al-Si matrix,and no particle agglomeration is found under experimental condition（Extrusion temperature: 350℃~500℃;mould angle: 45°,60ånd 90°;holding time: 30min~120min）.B₄C/Al-Si composites become densification when extrusion temperature reaches 450℃,with 60 min holding time.With the increasing of extrusion temperature and holding time,the number of silicon phase decreases while its particle size increases obviously.Mould angle mainly affects the integrity of B₄C particles,and B₄C particle is broken seriously since local strain enhancing with the increas-ing of mould angle.
- Hot extrusion,
- Aluminum-silicon alloy,
- Boron carbide,
- Microstructure

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