摘要
B^(10)具有优异的热中子屏蔽性能,B^(10)含量高、断裂韧性好、可进行塑性变形加工的B_(4)C_(p)/Al复合材料大尺寸薄板在乏燃料后处理方面有着广阔的应用前景。但是,随着B_(4)C颗粒含量的增多,B_(4)C与Al界面处脆性相增多,导致B_(4)C_(p)/Al复合材料的韧性变差,塑性变形能力减弱,后续塑性加工成型性差。因此,制备热中子屏蔽性能好的高硼含量B_(4)C_(p)/Al板材的关键是在保证高B_(4)C颗粒含量的前提下,通过控制B_(4)C颗粒和Al基体界面反应产物,提高B_(4)C_(p)/Al复合材料的韧性和塑性变形能力。本文首先介绍了B_(4)C_(p)/Al复合材料的制备方法,重点对浸渗法进行了论述,并介绍了B_(4)C_(p)/Al复合材料的塑性变形机制,对热加工温度、应变速率和B_(4)C_(p)/Al复合材料界面结构对B_(4)C_(p)/Al的塑性变形能力和热轧性能的影响进行了综述。同时,介绍了国内外近年来通过控制浸渗温度、添加合金元素和陶瓷颗粒等方法,实现对B_(4)C_(p)/Al复合材料界面成分、结构调控的研究成果。最后,本文对采用浸渗和热轧加工制备用于乏燃料后处理的高硼含量B_(4)C_(p)/Al复合材料大尺寸薄板的研究进行了展望。
B^(10)has excellent thermal neutron shielding performance.B_(4)C_(p)/Al composite large size sheet with high B^(10)content,good fracture toughness and plastic deformation prosessing has a broad application prospect in the post-processing of spent fuel.However,with the increase of the content of B_(4)C particles,the brittle phases at the interface between B_(4)C and Al increase,resulting in poor toughness of B_(4)C_(p)/Al composites,weakened the plastic deformation ability,and the subsequent plastic processing formability.Therefore,the key to preparing high boron content B_(4) C_p/Al sheet with good thermal neutron shielding performance is to improve the plastic deformation capacity and hot rolling performance of B_(4)C_(p)/Al composites by controlling the interface reaction products of B_(4)C particles and Al matrix under the premise of ensuring the high content of B_(4)C particles.This article first introduces the fabrication method of B_(4)C_(p)/Al composite and focusing on infiltration especially.This article also introduces the plastic deformation mechanism of B_(4)C_(p)/Al,and reviews the effects of hot working temperature,strain rate and interface structure on the plastic deformation capacity and hot rolling properties of B_(4)C_(p)/Al,meanwhile,the recent results about controlling the infiltration temperature,adding alloying elements or ceramic phase to adjust the composition and structure of the B_(4)C_(p)/Al interface were introduced.In the end,this article points out the future directions of fabrication and processing of high boron content B_(4)C_(p)/Al large size composite sheet for spent fuel reprocessing by infiltration and hot rolling.
作者
彭昊恺
刘瑶
马东林
冷永祥
PENG Haokai;LIU Yao;MA Donglin;LENG Yongxiang;无(School of Materials Science and Engineering,Southwest Jiaotong University,Chengdu 610031,China;School of Physics and Engineering Technology,Chengdu Normal University,Chengdu 610030,China)
出处
《复合材料科学与工程》
CAS
北大核心
2023年第4期128-136,共9页
Composites Science and Engineering
关键词
铝基碳化硼
浸渗
塑性变形
热轧
界面
复合材料
B_(4)C/Al
infiltration
plastic deformation
hot rolling
interface
composites
