摘要
研究了等离子喷焊Co-Cr合金与45钢间结合层的组织结构。结果表明,结合层由异相复合和单相(脱碳)两个亚层组成。异相复合亚层很薄,只有几个微米,它由非晶和微晶以及少量分布不均的Cr-Fe复合碳化物组成,硬度较高(HV>500);脱碳亚层-单相薄层是由于基材次表层中碳向液态金属扩散所致;喷焊特征层包括铸造技晶亚层(较厚)和细晶粒亚层。
The bonding layer of plasma spray welding of Co-Cr alloy on 0.45%
C steel was observed to consist of two layers: the several μm only thin sublayer
and the decarburized sublayer. The former is composed of amorphous and micro-
cpetalline phases together with small amount and uneven distributed complex Cr-Fe
alloy carbides. Its hardness is greater than HV 500 under 200g load. The later is
formed by diffusion of C from subsurface of the substrate to the liquid matal pool.
The characteristic welded layer consists also of two sublayers of thick columnar
casting dendrites and fine grains.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1991年第2期A115-A120,共6页
Acta Metallurgica Sinica
