Impact Wear Behavior of a Novel Light-weight Austenitic Wear-resistant Steel

被引：0

作者：

Peng S. ^{[1
]}

Song R. ^{[1
]}

Cai C. ^{[1
]}

Pei Z. ^{[1
]}

Guo K. ^{[2
,3
]}

Wang Z. ^{[3
]}

Gao J. ^{[4
]}

机构：

[1] School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing

[2] School of Chemical Engineering, University of Science and Technology Liaoning, Anshan

[3] Angang Group Mining Engineering Corporation, Anshan

[4] Anshan Iron and Steel Group Mining Company, Anshan

来源：

Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2017年 / 31卷 / 07期

关键词：

Impact wear; Light-weight austenitic steel; Metallic materials; Taylor lattices; Water quenching-aging; κ-carbide;

D O I：

10.11901/1005.3093.2016.396

中图分类号：

学科分类号：

摘要：

The wear resistance and wear mechanism of a novel light-weight Fe-24Mn-7Al-1.0C austenitic steel after water quenching (Q) and water quenching-aging (Q-A) treatments were studied by comparing with the Mn13Cr2. The impact wear tests were carried out by using MLD-10 abrasive wear testing tester under low impact energy condition (0.5 J). Results show that the wear resistance of Fe-24Mn-7Al-1.0C steel is 1.14 times higher than that of the water quenched Mn13Cr2. A large number of nano-sized (Fe, Mn)3AlC κ-carbide precipitates increase the initial hardness, strength and wear resistance of the steel after aging treatment at 550℃ for different time. The wear resistance of Fe-24Mn-7Al-1.0C steel is optimum after 1050℃ quenching and aging 1 h at 550℃, which is 1.40 times higher than that of Mn13Cr2. The worn surfaces of Mn13Cr2 consist of wide, long, uneven grooves and deep peeling pits, of which the formation may be ascribed to the repeated plastic deformation, while worn surfaces of the Fe-24Mn-7Al steel consist of tiny peeling pits and light grooves. Many stacking faults and dislocations in different directions are found on the subsurface of Mn13Cr2. Many Taylor lattices are found at the impact subsurface of Fe-24Mn-7Al steel before aging treatments. After aging treatment for 1 h at 550℃, Taylor lattices and highdensity dislocations are found, but no twins and martensitic transformation appear on the worn surface. © All right reserved.

引用

页码：537 / 546

页数：9

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