Development of ferrous shape memory alloy 0Cr12Ni6Mn16Si5
LI Qiang, ZHAO Yu-feng, DONG Zhi-zhong, CHEN Jin-ming (School of Materials Science & Engineering, Tianjin University, Tianjin 300072, China)
In this paper, a new technique is approached for melting the ferrous shape memory alloy-0Cr12Ni6Mn16Si5. The experimental results show that 0Cr12Ni6Mn16Si5 canbe produced relations of the plasticity and the resistance against deformation with the temperature are measured by thermal tension tests. It is clear that the thermal-sensitivity of the alloy is very strong and the plasticity decreases heavily when the temperature is over 1*!100℃.Therefore, the ingots should be forged in the temperature range from 1*!080℃ to 900℃. The pipes can be formed only by hot-extrusion due to the low thermal plasticity, then these thick-wall pipes are worked into thin-wall pipes further by means of traditional cold-rolling together with cold-drawing.