The results show that pseudo-eutectic carbides are mainly V_8C_7 and Fe_3Mo_3C in annealed H13 ESR ingot.
研究表明:H13钢电渣锭中的伪共晶碳化物主要为V8C7与Fe3Mo3C;在锻造加热过程中,Fe3Mo3C溶于基体,并在锻后退火和淬回火的过程中重新从基体中析出,大部分V8C7溶于基体,少量未溶颗粒保留于锻后退火组织及淬回火组织中;淬回火过程中大量析出以V8C7、Mo2C为主的二次硬化型碳化物,上述结果与JMatPro计算结果基本符合。
By calculation of thermodynamics, analysis of crystal structure and study of TEM and eletron probe, it is first discovered that SiO_2 can be acted as one of the heterogeneous nuclei for lamellar intergrowth eutectic(austenite and cementite) crystallizing in modified as-cast medium manganese steel.
对变质铸态中锰钢进行热力学计算、晶体结构分析,透射电镜与电子探针研究,发现SiO_2完全可以作为层片状共生共晶体(共晶两相为奥氏体与合金渗碳体)的非自发核心。