注射成形生物可降解Fe-Mn合金的制备及性能

doi:10.19976/j.cnki.43-1448/TF.2021089

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Abstract Fe-Mn alloy as a kind of biodegradable material has attracted extensive attention owing to its good mechanical properties and biocompatibility. In this paper, the Fe-xMn (x=25, 30, 35,mass fraction, the same below) alloys were prepared by injection molding. The effect of sintering time on the microstructure, mechanical properties and in vitro static degradation properties of Fe-Mn alloys was studied. The results show that sintering time has few effects on the phase composition of Fe-Mn alloys. However, Mn content affects the phase composition of the alloys. Fe-35Mn alloys are mainly composed of austenite. The average grain size of Fe-Mn alloys prepared by injection molding is about 10-20 μm, and Mn loss is about 5.8%-10.82% on the surface. When the sintering time is 7 h, the Fe-35Mn alloy possesses the optimal mechanical properties involving the tensile breaking strength of 358 MPa and the elongation of 10.83%. The 30-day static immersion degradation tests show that the degradation rate of the alloy is 1 mm/y after soaking for one day, and gradually decreases with the accumulation of corrosion products.

Key words： injection molding biodegradable alloy Fe-Mn alloy mechanical properties degradation properties

Received: 28 October 2021 Published: 28 February 2022

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R318.08

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	ZHANG Ye
	LI Dongyang
	LI Yimin
	LUO Fenghua
	SHU Chang
	LI Song

Cite this article:

ZHANG Ye,LI Dongyang,LI Yimin, et al. Preparation and properties of biodegradable Fe-Mn alloy by injection molding[J]. Materials Science and Engineering of Powder Metallurgy, 2022, 27(1): 102-110.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2021089 OR http://pmbjb.csu.edu.cn/EN/Y2022/V27/I1/102

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