粉末冶金Fe-13Cr-0.5Mo-3Nb透气钢的制备及其模具应用性能

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Abstract In this work, a high carbon and niobium-containing stainless steel Fe-13Cr-0.5Mo-3Nb was proposed. A porous breathable steel was fabricated by powder metallurgy. The effects of powder size, green density, sintering temperature on the structures and properties of the steel were studied. And the applying property of injection molded was researched. The results show that the breathable steel has high strength, good breathability and excellent corrosion resistance prepared by the powder size of 96-120 μm, the average green density is 5.6 g/cm³, and the sintering temperature is 1 280 ℃. The yield strength and corrosion resistance of the breathable steel are 295 MPa and 0.016 mm/y, respective. Moreover, the surface quality of the injection molded product can be improved. Compared with imported similar materials, the mechanical properties of die strength index can be improved obviously on the basis of ensuring good air breathability and corrosion resistance.

Key words： breathable steel powder metallurgy breathability mechanical properties corrosion resistance

Received: 22 January 2019 Published: 12 July 2019

ZTFLH:

TG142.4

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	CHEN Gang
	ZHU Lihua
	WU Xusheng
	SHEN Shucheng

Cite this article:

CHEN Gang,ZHU Lihua,WU Xusheng, et al. Preparation of powder metallurgy Fe-13Cr-0.5Mo-3Nb breathable steel and application in mold[J]. Materials Science and Engineering of Powder Metallurgy, 2019, 24(4): 340-349.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2019/V24/I4/340

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