摘要
采用热等静压法制备铝基碳化硼复合材料(Al-B4C)板材,测试板材的密度和抗拉强度,并观察复合材料的微观组织和拉伸断口形貌。结果表明,Al-31%B4C(质量分数)板材的尺寸为3 mm×200 mm×5000 mm;Al-31%B4C复合材料的相对密度大于99.69%,抗拉强度大于300 MPa,断后延伸率大于3%,B4C颗粒均匀分布在基体中,并与基体紧密结合;Al-B4C复合材料板材的力学性能符合工程用中子吸收材料的要求。比较含不同质量分数B4C颗粒(10%、15%、20%、25%、30%、31%、35%、40%)的Al-B4C复合材料性能,当B4C质量分数为10%~40%时,随基体中B4C颗粒含量的增加,Al-B4C复合材料的密度和相对密度均逐渐降低;当B4C质量分数为10%~35%时,随基体中B4C颗粒含量的增加,Al-B4C复合材料的抗拉强度逐渐增大,断后延伸率逐渐降低。
The aluminum-based boron carbide composites(Al-B4C) were fabricated by hot isostatic pressing. The density, tensile strength, microstructures, and fracture morphology of the Al-B4C composites were investigated. The results show that, the plate size of Al-31%B4C composites by mass is 3 mm × 200 mm × 5000 mm;the relative density of Al-31% B4C composites is greater than 99.69%, the tensile strength is greater than 300 MPa, and the elongation is greater than 3%;the B4C particles are evenly embedded in the Al matrix, and the B4C particles are tightly bound to the Al matrix;the physical properties of aluminum-based boron carbide composite plates meet the requirement of the neutron-absorbing materials used in engineering. The physical properties of Al-B4C composites with different B4C contents by mass(10%, 15%, 20%, 25%, 30%, 31%, 35%, and 40%)are compared. When the content of B4C is 10%~40% by mass, with the increase of B4C content in the matrix, the density and relative density of Al-B4C composites gradually decrease;when the B4C content by mass ranges from 10% to 35%, with the increase of B4C content in the matrix, the tensile strength of Al-B4C composites gradually increases, and the elongation gradually decreases.
作者
陈锦
熊宁
葛启录
王铁军
蔡静
刘桂荣
CHEN Jin;XIONG Ning;GE Qi-lu;WANG Tie-jun;CAI Jing;LIU Gui-Rong(Central Iron&Steel Research Institute,Beijing 100081,China;Antai-heyuan Nuclear Energy Technology&Materials Co.,Ltd.,Zhuozhou 072750,China)
出处
《粉末冶金技术》
CAS
CSCD
北大核心
2020年第2期132-137,共6页
Powder Metallurgy Technology
关键词
热等静压
铝基复合材料
碳化硼
物理性能
板材
hot isostatic pressing
aluminum-based composites
boron carbide
physical properties
plates
