INFLUENCE OF CRYOGENIC TREATMENT ON MICROSTRUCTURE CHARACTERISTICS AND MECHANICAL PROPERTIES OF AISI D2 TOOL STEEL

被引：0

作者：

Ghasemi-Nanesa, Hadi ^{[1
]}

Jahazi, Mohammad ^{[1
]}

Trigo, Gil ^{[2
]}

Levasseur, Tom ^{[2
]}

机构：

[1] Ecole Technol Super, Dept Mech Engn, Montreal, PQ H3C 1K3, Canada

[2] DK SPEC Co, Quebec City, PQ G7A 2M8, Canada

来源：

TMS 2014 SUPPLEMENTAL PROCEEDINGS | 2014年

关键词：

Cryogenic Treatment; AISI D2 Steel; Mechanical Properties; Fine Carbides; WEAR-RESISTANCE;

D O I：

暂无

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Significant improvement in mechanical properties of tool steels may be obtained by cryogenic heat treatment at temperatures as low as 77K. However, the selection of the cryogenic temperature can significantly influence the final properties. In the present study, AISI D2 tool steel was cryogenically treated at 183K and 77K. Microstructural studies using scanning electron microscope (SEM) and image analyzing process revealed higher volume fraction of fine secondary carbides for both cryogenically treated alloys in comparison with conventionally treated one. Higher volume fraction of fine secondary carbides was observed when the cryogenic treatment temperature was reduced to 77K. Also, the volume fraction of large carbides has been reduced after both cryogenic treatments. Tensile test results revealed simultaneous enhancement of ultimate tensile strength, higher elastic modulus (E) and increased ductility for cryogenically treated alloy at 183K. More improvement was observed when the cryogenic temperature reduced to 77K.

引用

页码：991 / 997

页数：7

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