Pack boronizing of AISI H11 tool steel: Role of surface mechanical attrition treatment

被引：53

作者：

Balusamy, T. ^{[1
,2
]}

Narayanan, T. S. N. Sankara ^{[1
,3
]}

Ravichandran, K. ^{[2
]}

Park, Il Song ^{[3
]}

Lee, Min Ho ^{[3
]}

机构：

[1] CSIR Natl Met Lab, Madras Ctr, Madras 600113, Tamil Nadu, India

[2] Univ Madras, Dept Analyt Chem, Madras 600025, Tamil Nadu, India

[3] Chonbuk Natl Univ, Sch Dent, Dept Dent Biomat, Jeonju 561756, South Korea

来源：

VACUUM | 2013年 / 97卷

关键词：

Surface mechanical attrition treatment (SMAT); Boronizing; Iron borides; Alloy borides; Diffusion; Duplex treatment; LOW-CARBON STEEL; STAINLESS-STEEL; PHASE-TRANSFORMATIONS; LOWER TEMPERATURES; BORIDING KINETICS; LAYER; IRON; NANOCRYSTALLIZATION; REFINEMENT; DIFFUSION;

D O I：

10.1016/j.vacuum.2013.04.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The role of surface mechanical attrition treatment (SMAT) on pack boronizing of AISI H11 type tool steel is addressed. SMAT induced plastic deformation, enabled nanocrystallization at the surface, reduced the grain size and increased the volume fraction of non-equilibrium gain boundaries, increased the accumulation of defects and dislocations at the grain boundaries and within the grains. These features helped to promote the diffusion of boron during boronizing and increased the case depth and hardness of the bonded layer. Duplex treatment on SMATed H11 steel samples helps to achieve a higher case depth when compared to the single stage treatment. The findings of the study suggest that SMAT can be used as a pretreatment for boronizing of H11 tool steel. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：36 / 43

页数：8

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