摘要
本文叙述了具有相同显微组织和晶粒度的超高强度钢Ｄ６ＡＣ中钢的韧性与ＺｒＮ＋ＭｎＳ夹杂物数量和参数的关系。通过电子探针微压分析、图象仪和金相显微分析，测定了夹杂物的成分、数量和参数Ｐｐ、Ｐｃ、ｌｍａｘ、Δｊ、ｄＴ和 。通过扫描电镜观察了断裂韧性和冲击试样断口。研究得出：试样的韧性分别随着ＺｒＮ＋ＭｎＳ和ＭｎＳ夹杂物总量的增加而线性地降低，但除ＺｒＮ与最大尺寸对应的数目Ｎ 外，韧性和ＺｒＮ的数量之间没有关系。试样的韧性随着夹杂物间距ｄＴ和ＭｎＳ的最邻近间距增大而增大。
This paper describes the toughness of an Ultrahigh Strength steel D6AC in relation to change in content and parameters of ZrN+MnS inclusion.The composition content and parameters P_P Ps、lmax、Δj、and N of inclusion had beendetermined by EMPA、QTM and metallographic microscope respectively.The fracture of K1c and impact specimens were observed by SEM. The main conclusions to be drawn from this study are as follows The toughness of specimens is decreasing linearly with increasing the total content of ZrN+MnS and MnS inclusion respectively, but there is no relation between the toughness and content of ZrN inclusion beside the N The toughness of specimens is increasing with increasing the inclusion spacing(d_T)and the nearest distance of MnS inclusion (ΔjMns).
出处
《材料科学与工程》
CAS
CSCD
1994年第4期54-60,共7页
Materials Science and Engineering
