Influence of Mechanical Vibration on Microstructure and Properties of Investment Casting 0Cr17 Ferritic Stainless Steels

Kang Yan; Mao Weimin; Xu Dusheng; Chen Yijun; Jing Jian; Chen Xuemei

doi:10.15980/j.tzzz.2015.10.020

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Influence of Mechanical Vibration on Microstructure and Properties of Investment Casting 0Cr17 Ferritic Stainless Steels
Vol. 35, Issue 10, Pages: 1073-1077(2015)
Published： 2015 ，
DOI： 10.15980/j.tzzz.2015.10.020

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[1]康燕,毛卫民,许杜生,陈艺骏,荆剑,程雪梅.机械振动对熔模铸造0Cr17不锈钢组织与性能的影响[J].特种铸造及有色合金,2015,35(10):1073-1077.

Kang Yan, Mao Weimin, Xu Dusheng, et al. Influence of Mechanical Vibration on Microstructure and Properties of Investment Casting 0Cr17 Ferritic Stainless Steels. [J]. Special Casting & Nonferrous Alloys 35(10):1073-1077(2015)
[1]康燕,毛卫民,许杜生,陈艺骏,荆剑,程雪梅.机械振动对熔模铸造0Cr17不锈钢组织与性能的影响[J].特种铸造及有色合金,2015,35(10):1073-1077. DOI： 10.15980/j.tzzz.2015.10.020.

Kang Yan, Mao Weimin, Xu Dusheng, et al. Influence of Mechanical Vibration on Microstructure and Properties of Investment Casting 0Cr17 Ferritic Stainless Steels. [J]. Special Casting & Nonferrous Alloys 35(10):1073-1077(2015) DOI： 10.15980/j.tzzz.2015.10.020.

摘要

在0Cr17不锈钢熔模铸造的浇注及凝固过程中施加垂直方向的机械振动

并与未振动试样进行对比

研究不同的振动频率和振幅对晶粒尺寸及力学性能的影响。结果表明

相同振动频率时

随着振幅的增大

晶粒尺寸减小

抗拉强度增大;振幅较低时

随着振动频率的增加

晶粒尺寸变化不明显;振幅较大时

随着振动频率增加

晶粒尺寸减小

抗拉强度增大。最佳的振动参数是振动频率为35Hz、振幅为4mm

其细化率为66.7%

抗拉强度比未振动试样高出9.3%。

Abstract

Vertical mechanical vibration was applied during the casting and solidification process of investing casting 0Cr17 stainless steel.Compared with the non-vibrating samples

influences of frequency and amplitude on the grain size and mechanical properties of 0Cr17 were investigated.The results reveal that at the same frequency

with the increase of the amplitude

the grain size is decreased and the tensile strength is increased

whlie at a low amplitude

change of the grain size can be ignored with the increase of frequency

At a higher amplitude

the grain size is decreased and the tensile strength is increased with the increase of frequency.The optimal values of frequency and amplitude are 35 Hz and 4mm

respectively

where refining degree can reach to 66.7%

and the tensile strength is 9.3% higher than that of the non-vibrating samples.