Residual Stress and Microstructure Characterization of 34CrMo4 Steel Modified by Shot Peening

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Abstract

34CrMo4 steel is widely used for drill stem in oil exploration, because of its excellent properties, such as favorable hardenability, shock absorption, less tendency of temper brittleness, and eminent wear resistance. In this study, the main works are residual stress test and microstructure characterization of 34CrMo4 steel upon various shot peening treatments. The residual stress distribution with effect depth was studied upon the shot peening. Face-to-face paste sample preparation method is required for continuous observation for microstructure evolution of shot-peened specimen from the treat surface to matrix. Grain refinement, lath structure, and precipitates are clearly observed in the gradient deformation layer.

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Author and article information

Contributors

Kejian Li:

ORCID: https://orcid.org/0000-0002-3506-5301

Dengming Chen:

ORCID: https://orcid.org/0000-0002-2788-4120

Journal

Journal ID (nlm-ta): Scanning

Journal ID (iso-abbrev): Scanning

Journal ID (publisher-id): SCANNING

Title: Scanning

Publisher: Hindawi

ISSN (Print): 0161-0457

ISSN (Electronic): 1932-8745

Publication date Collection: 2020

Publication date (Electronic): 11 March 2020

Volume: 2020

Electronic Location Identifier: 5367345

Affiliations

¹School of Metallurgy and Materials Engineering, Chongqing University of Science & Technology, Chongqing 401331, China

²College of Material Science and Engineering, Chongqing University of Technology, Chongqing 400054, China

³School of Nano & Advanced Materials Engineering, Changwon National University, Changwon 51140, Republic of Korea

Author notes

Guest Editor: Zhiping Xiong

Author information

Kejian Li https://orcid.org/0000-0002-3506-5301

Dengming Chen https://orcid.org/0000-0002-2788-4120

Article

DOI: 10.1155/2020/5367345

PMC ID: 7091540

SO-VID: 162a609f-556a-4099-b2fa-d49e5b39a55e

License:

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

History

Date received : 24 November 2019

Date revision received : 19 December 2019

Date accepted : 30 December 2019

Funding

Funded by: Chongqing University

Award ID: CXQT19031

Funded by: Chongqing Municipal Education Commission

Award ID: KJ1709202

Award ID: KJQN201901515

Funded by: National Key Research and Development Program of China

Award ID: 2018YFC011520201

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