Effect of Rare Earth Elements on Machining Characteristics of Austenitic Stainless Steels without Lead Addition

Zhuang Li; Di Wu; Wei Lv; Shao Pu Kang; Zhen Zheng

doi:10.4028/www.scientific.net/AMM.377.128

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Phase Transformation Behavior during Continuous Cooling of Fe-C-Mn-Si Multiphase Steels
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Effect of Rare Earth Elements on Machining Characteristics of Austenitic Stainless Steels without Lead Addition
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 377Effect of Rare Earth Elements on Machining...

Effect of Rare Earth Elements on Machining Characteristics of Austenitic Stainless Steels without Lead Addition

Abstract:

Rare earth elements (REE) are harmless for human health. REE addition contributes to the improvement of the machinability of the steels. In the present paper, machining characteristics of austenitic stainless steels without lead addition were investigated by adding free-machining elements, such as sulfur, REE and bismuth. The results have shown that large numbers of rounded, globular shaped inclusions were obtained for both steels. The machinability of steel B is better than that of steel A, and the cutting forces of steel B are lower than those of steel A at various cutting speeds. Lead can be substituted by REE and bismuth in free machinable austenitic stainless steels. REE significantly affects machining characteristics of austenitic stainless steels without lead addition. The mechanical properties of both steels were similar, and their fracture exhibited ductile characteristics. Satisfactory machinability and mechanical properties can be obtained for both steels.

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Periodical:

Applied Mechanics and Materials (Volume 377)

Pages:

128-132

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.377.128

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Online since:

August 2013

Authors:

Zhuang Li, Di Wu, Wei Lv, Shao Pu Kang, Zhen Zheng

Keywords:

Austenitic Stainless Steel, Machining Characteristics, Rare Earth Element (REE), Without Lead Addition

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