摘要
45号圆钢加工制成扳手后印痕处发现裂纹。笔者对 4 5号钢扳手进行了金相检验及分析。结果表明 :扳手印痕处的裂纹是应力集中造成的。
The cracks of spanners made of hot-rolled round steel 45 were analysed by metallographic examination. The result showed that these cracks arise from stress concentration.
出处
《物理测试》
CAS
2004年第6期39-40,共2页
Physics Examination and Testing
