Microscale Mechanical Behavior of the Subsurface by Finishing ProcessesSource: Journal of Manufacturing Science and Engineering:;2005:;volume( 127 ):;issue: 002::page 333DOI: 10.1115/1.1807853Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Hard turning, grinding, and honing are common finishing processes in today’s production. The machined subsurface undergoes severe deformation and possible microstructure changes in a small scale subsurface layer (<20 μm). Mechanical behavior of this shallow layer is critical for component performance such as fatigue and wear. Due to the small size of this region, mechanical behavior of this shallow layer is hard to measure using traditional material testing. With the nanoindentation method, mechanical behavior (nanohardness and modulus) at the microscale in subsurface was measured for AISI 52100 and AISI 1070 steel components machined by hard turning, grinding, and honing. The test results show that white layer increases nanohardness but decreases modulus of a turned surface. Nanohardness and modulus of the ground surface are slightly smaller than the honed one in the subsurface. However, grinding produces higher nanohardness and modulus in near-surface (<10 μm) than honing, while honing produces more uniform hardness and modulus in the near-surface and subsurface, and would improve component performance. Nanohardness and modulus of the machined near-surface are strongly influenced by strain hardening, residual stress, size-effect, and microstructure changes.
keyword(s): Finishing , Mechanical behavior , Microscale devices , Nanoindentation , Grinding , Stress , Work hardening , Turning , Steel , Wear , Size effect AND Fatigue ,
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contributor author | Y. B. Guo | |
contributor author | A. W. Warren | |
date accessioned | 2017-05-09T00:16:58Z | |
date available | 2017-05-09T00:16:58Z | |
date copyright | May, 2005 | |
date issued | 2005 | |
identifier issn | 1087-1357 | |
identifier other | JMSEFK-27864#333_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/132197 | |
description abstract | Hard turning, grinding, and honing are common finishing processes in today’s production. The machined subsurface undergoes severe deformation and possible microstructure changes in a small scale subsurface layer (<20 μm). Mechanical behavior of this shallow layer is critical for component performance such as fatigue and wear. Due to the small size of this region, mechanical behavior of this shallow layer is hard to measure using traditional material testing. With the nanoindentation method, mechanical behavior (nanohardness and modulus) at the microscale in subsurface was measured for AISI 52100 and AISI 1070 steel components machined by hard turning, grinding, and honing. The test results show that white layer increases nanohardness but decreases modulus of a turned surface. Nanohardness and modulus of the ground surface are slightly smaller than the honed one in the subsurface. However, grinding produces higher nanohardness and modulus in near-surface (<10 μm) than honing, while honing produces more uniform hardness and modulus in the near-surface and subsurface, and would improve component performance. Nanohardness and modulus of the machined near-surface are strongly influenced by strain hardening, residual stress, size-effect, and microstructure changes. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Microscale Mechanical Behavior of the Subsurface by Finishing Processes | |
type | Journal Paper | |
journal volume | 127 | |
journal issue | 2 | |
journal title | Journal of Manufacturing Science and Engineering | |
identifier doi | 10.1115/1.1807853 | |
journal fristpage | 333 | |
journal lastpage | 338 | |
identifier eissn | 1528-8935 | |
keywords | Finishing | |
keywords | Mechanical behavior | |
keywords | Microscale devices | |
keywords | Nanoindentation | |
keywords | Grinding | |
keywords | Stress | |
keywords | Work hardening | |
keywords | Turning | |
keywords | Steel | |
keywords | Wear | |
keywords | Size effect AND Fatigue | |
tree | Journal of Manufacturing Science and Engineering:;2005:;volume( 127 ):;issue: 002 | |
contenttype | Fulltext |