Yanqing SU
,
Jingjie GUO
,
HongSheng DING
,
Songqing LIU
,
Yuan LIU
,
GuiZhong LIU
,
Jun JIA
材料科学技术（英）
How to control melt composition is the key for getting high quality alloy melt. The paper made the following efforts: (1) The activity coefficients in Ti-15-3 melt have been calculated. (2) Taking advantage of the activity coefficients, the evaporation losses of components in Ti-15-3 melt during ISM process have been studied. The calculated results show that there is a critical vacuum degree (about 1.33 Pa) during melting process.
关键词:
Jingjie GUO
,
Yuan LIU
,
Hongsheng DING
,
Yanqing SU
,
Jun JIA
材料科学技术（英）
Using direct finite difference method, a numerical model for simulating the temperature field in the charge during induction skull melting (ISM) has been developed. On the basis of the model, the temperature field in Ti- 47Ni-9Nb ingot has been calculated under various melting conditions. Finally, the processing parameters (melting power, melting-down time and the final melt temperature) have been optimized.
关键词:
