Enhanced Shot Peening Effect for Steels by Using Fe-based Glassy Alloy Shots
Enhanced Shot Peening Effect for Steels by Using Fe-based Glassy Alloy Shots
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DOI：
10.2320/matertrans.44.2391
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发表时间：
2003-11
影响因子：
1.2
通讯作者：
A. Inoue;I. Yoshii;H. Kimura;K. Okumura;J. Kurosaki
中科院分区：
文献类型：
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作者：
A. Inoue;I. Yoshii;H. Kimura;K. Okumura;J. Kurosaki
发现使用Fe-Co-Ni-Mo-B-Si玻璃态合金球作为喷丸剂对钢板产生显著增强的喷丸效果，即，与传统铸钢丸和高速钢丸相比，丸区厚度增加，丸区硬度和残余压应力增加，丸表面产生明显的火山口状花纹。还发现玻璃态合金丸的耐久寿命比常规结晶合金丸的耐久寿命长8至10倍。铁基玻璃合金丸具有较低的杨氏模量、较大的弹性延伸极限和较高的抗拉强度，这是传统的结晶钢丸所不能达到的。铁基非晶合金作为喷丸的有效性的发现是有前途的未来应用。
The use of Fe-Co-Ni-Mo-B-Si glassy alloy balls as peening shots was found to cause a significantly enhanced shot peening effect for steel sheets, i.e., the increase in the thickness of the shot region, higher hardness and higher compressive residual stress in the shot region, and the generation of much distinct crater-like pattern on the shot surface in comparison with those for conventional cast steel shots and high speed steel shots. It was also found that the endurance life time of the glassy alloy shots is 8 to 10 times longer than those for the conventional crystalline alloy shots. The enhanced effect was interpreted to originate from unique mechanical properties of the Fe-based glassy alloy shots such as lower Young’s modulus, larger elastic elongation limit and higher tensile strength which cannot be obtained for the conventional crystalline steel shots. The finding of the effectiveness of the Fe-based glassy alloy as peening shots is promising for future applications.