摘要
采用包覆浇铸+热成形方法制备出含硼量在2%～2.5%的高硼不锈钢复合板。三点弯曲实验表明,固溶处理后中间层的含硼不锈钢其拉伸和压缩变形量分别达到5.6%和6.0%,固溶后的含硼不锈钢复合板表现出的塑性已接近ASTM A887标准中的304BN7(B级)。采用这种复合材料的结构设计,可使含硼不锈钢复合板表现出比单一材料弯曲时更好的塑性。复合板发生断裂时,覆层和中间层的基体断口均显示出典型的韧窝形貌。中间层中硼化物和基体之间的断口为解理断口,使其塑性降低。
High boron alloyed stainless steel composite plate（HBASSCP） with boron content 2%- 2.5%was fabricated by composite casting and hot forming process. The test of three-point bending shows that the tensile and compression deformation of middle layer of boron alloyed stainless steel have reached 5.6%and 6.0% respectively after solution treatment. The plasticity of boron alloyed stainless steel composite plate after solution treatment is close to 304BNT（B grade） of ASTM Standard. The boron alloyed stainless steel composite plate has better plasticity than single plain stainless steel when they are bended by this method. Typical morphology of dimples are observed in the matrix of both outer and middle layers. Cleavage fracture are observed between the borides and matrix in the middle layer, leading to the reduction of plasticity.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2013年第6期25-28,34,共5页
Journal of Materials Engineering
关键词
高硼不锈钢复合板
固溶处理
三点弯曲
断口
high boron alloyed stainless steel composite plate （HBASSCP）
solution treatment
threepoint bending
fracture
