Surface modification of 17-4 PH stainless steel by laser peening without protective coating process

被引：64

作者：

Karthik, D. ^{[1
]}

Kalainathan, S. ^{[1
]}

Swaroop, S. ^{[1
]}

机构：

[1] VIT Univ, Sch Adv Sci, Vellore 632014, Tamil Nadu, India

来源：

SURFACE & COATINGS TECHNOLOGY | 2015年 / 278卷

关键词：

Stainless steel; Laser peening without protective coating (LPwC); Residual stress; Micro-hardness; Surface roughness and topography; ALUMINUM-ALLOY; RESIDUAL-STRESS; CORROSION-RESISTANCE; PITTING CORROSION; FATIGUE BEHAVIOR; GRAIN-REFINEMENT; AL-ALLOY; SHOCK; MICROSTRUCTURE; TOPOGRAPHY;

D O I：

10.1016/j.surfcoat.2015.08.012

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The objective of the present study was to examine the influence of laser peening without protective coating (LPwC) process on surface mechanical properties of precipitation hardened stainless steel 17-4 PH. Pulse densities, 2500 and 6250 pulses cm(-2), using a constant laser power density of 5.97 GW cm(-2) were chosen and their effect on residual stresses, micro-structure, micro-hardness, surface roughness and topography were investigated. Higher pulse density induced large compressive residual stresses and influenced up to depth of 600 mu m. It was confirmed from resulted larger lattice strain in LPwC processed 17-4 PH steel with higher pulse density. No phase transformation and microstructural change were observed, which represented pure mechanical effect of LPwC. Hardness was increased with depth of hardened layer up to 600 mu m for higher pulse density. However, the surface roughness was increased by the process, and resulted in more pronounced peening pattern. Surface topography revealed columnar structure after LPwC process. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：138 / 145

页数：8

共 51 条

[1] Residual stress state and fatigue behaviour of laser shock peened titanium alloys [J].

Altenberger, I. ;

Sano, Y. ;

Cherif, M. A. ;

Nikitin, I. ;

Scholtes, B. .

RESIDUAL STRESSES VII, 2006, 524-525 :129-134

[2]

[Anonymous], 2014, STAND SPEC CHROM CHR

[3] Failure of a 17-4 PH stainless steel sailboat propeller shaft [J].

Arisoy, CF ;

Basman, G ;

Sesen, MK .

ENGINEERING FAILURE ANALYSIS, 2003, 10 (06) :711-717

[4] Shock waves from a water-confined laser-generated plasma [J].

Berthe, L ;

Fabbro, R ;

Peyre, P ;

Tollier, L ;

Bartnicki, E .

JOURNAL OF APPLIED PHYSICS, 1997, 82 (06) :2826-2832

[5] Laser processing of inconel 600 and surface structure [J].

Bugayev, AA ;

Gupta, MC ;

Payne, R .

OPTICS AND LASERS IN ENGINEERING, 2006, 44 (02) :102-111

[6] Random-type scanning patterns in laser shock peening without absorbing coating in 2024-T351 Al alloy: A solution to reduce residual stress anisotropy [J].

Correa, C. ;

Peral, D. ;

Porro, J. A. ;

Diaz, M. ;

Ruiz de Lara, L. ;

Garcia-Beltran, A. ;

Ocana, J. L. .

OPTICS AND LASER TECHNOLOGY, 2015, 73 :179-187

[7] Effect of initial surface topography on the surface status of LY2 aluminum alloy treated by laser shock processing [J].

Dai, F. Z. ;

Lu, J. Z. ;

Zhang, Y. K. ;

Luo, K. Y. ;

Wang, Q. W. ;

Zhang, L. ;

Hua, X. J. .

VACUUM, 2012, 86 (10) :1482-1487

[8] PHYSICAL STUDY OF LASER-PRODUCED PLASMA IN CONFINED GEOMETRY [J].

FABBRO, R ;

FOURNIER, J ;

BALLARD, P ;

DEVAUX, D ;

VIRMONT, J .

JOURNAL OF APPLIED PHYSICS, 1990, 68 (02) :775-784

[9]

Fairand B.P., 1978, P LAS SOL INT LAS PR

[10]

Fitzpatrick M.E., 2003, ANAL RESIDUAL STRESS

← 1 2 3 4 5 6 →