| Effect of RE Elements on the Morphology of Carbides and the Impact Fatigue Properties of the Low Cr White Cast Iron |
| |
| 引用本文： | 梁工英,顾林喻. Effect of RE Elements on the Morphology of Carbides and the Impact Fatigue Properties of the Low Cr White Cast Iron[J]. 中国稀土学报(英文版), 1993, 0(3) |
| |
| 作者姓名： | 梁工英 顾林喻 |
| |
| 作者单位： | Xi'an Jiaotong University Xi'an 710049，China，Xi'an Institute of Technology |
| |
| 摘 要： | An apparatus of zone melting unidirectional solidification with a steep temperature gradient andan impact fatigue tester were used.The effect of RE elements on the morphology of carbides and the impactfatigue properties of the low Cr white cast iron were investigated.Experimental results showed that the modi-fying effect of RE elements was remarkable on the M3C carbides.With the addition of RE elements in thelow Cr iron,a lot of plate-like carbides were transformed into lath-like and rod-like ones.The higher thecontent of RE elements was,the more was the fraction of the lath-like and rod-like carbides.In the low Crwhite cast iron,the RE modifying agent can efficiently increase the impact fatigue resistance and decrease thecrack growth rate and delay the time of incipient cracking.With the increase of the content of RE elements inthe low Cr cast iron,the impact fatigue resistance increased greatly and the crack growth rate decreased rap-idly.
|
Effect of RE Elements on the Morphology of Carbides and the Impact Fatigue Properties of the Low Cr White Cast Iron |
| |
| Liang Gong-Ying. Effect of RE Elements on the Morphology of Carbides and the Impact Fatigue Properties of the Low Cr White Cast Iron[J]. Journal of Rare Earths, 1993, 0(3) |
| |
| Authors: | Liang Gong-Ying |
| |
| Abstract: | An apparatus of zone melting unidirectional solidification with a steep temperature gradient and an impact fatigue tester were used.The effect of RE elements on the morphology of carbides and the impact fatigue properties of the low Cr white cast iron were investigated.Experimental results showed that the modi- fying effect of RE elements was remarkable on the M3C carbides.With the addition of RE elements in the low Cr iron,a lot of plate-like carbides were transformed into lath-like and rod-like ones.The higher the content of RE elements was,the more was the fraction of the lath-like and rod-like carbides.In the low Cr white cast iron,the RE modifying agent can efficiently increase the impact fatigue resistance and decrease the crack growth rate and delay the time of incipient cracking.With the increase of the content of RE elements in the low Cr cast iron,the impact fatigue resistance increased greatly and the crack growth rate decreased rap- idly. |
| |
| Keywords: | White iron Rare earth elements Impact fatigue |
| 本文献已被 CNKI 等数据库收录！ |
