The result indicates that the large grain brittle inclusion in the molten steel is the key factor can lead to brittle fracture.
通过对高碳帘线钢线材断口试样的检验分析，认为钢中大颗粒脆性夹杂物是导致脆断的重要原因。
2
In this paper, the chemical contents, microstructure, inclusion, grain size and fracture analysis of the second grade gas turbine blade were investigated.
对燃气轮机二级动叶片失效件进行了化学成分分析、金相组织观察、晶粒度测定、夹杂物检查及断口分析。
3
The fracture section microstructure and inclusion of 82B wire rod were tested, and the drawing brittle fracture was examined using SEM.