Formation mechanism of nano-crystal on the blade surface produced by low-plasticity ultrasonic rolling strengthening process

Dongbo Wu; Yang Zheng; Hui Wang; Hongru Lv; Jiawei Liang; Jie Yu

doi:10.1016/j.jmapro.2023.01.023

Formation mechanism of nano-crystal on the blade surface produced by low-plasticity ultrasonic rolling strengthening process

Dongbo Wu
, Yang Zheng
, Hui Wang^*
, Hongru Lv
, Jiawei Liang
, Jie Yu

^*Corresponding author for this work

Research institute of Aero-Engine

Tsinghua University
AECC Xi’an Aero-engine LTD

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

This paper proposes a low-plasticity ultrasonic rolling strengthening process (URSP) to form a surface hardened layer of titanium alloy blade. The process principle of low-plasticity URSP is firstly analyzed, and then the mechanism of titanium alloy blade surface grain refinement is revealed based on the SEM, TEM and EBSD experiment. The mechanical properties of strengthen layer caused by the grain refinement are finally analyzed on macroscopic and microscopic scales. The results showed that the low-plasticity URSP reduced the volume of the grain and formed nano-crystal with clear grain boundary distribution on the blade surface. The low-plasticity URSP formed a hardened layer with the depth of 70 μm caused by grain refinement and the nano-hardness is increased by 26 %.

Original language	English
Pages (from-to)	357-366
Number of pages	10
Journal	Journal of Manufacturing Processes
Volume	90
DOIs	https://doi.org/10.1016/j.jmapro.2023.01.023
State	Published - 24 Mar 2023

Keywords

Blade
Nano-crystal
Nano-hardness
Ultrasonic rolling strengthening process

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10.1016/j.jmapro.2023.01.023

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title = "Formation mechanism of nano-crystal on the blade surface produced by low-plasticity ultrasonic rolling strengthening process",

abstract = "This paper proposes a low-plasticity ultrasonic rolling strengthening process (URSP) to form a surface hardened layer of titanium alloy blade. The process principle of low-plasticity URSP is firstly analyzed, and then the mechanism of titanium alloy blade surface grain refinement is revealed based on the SEM, TEM and EBSD experiment. The mechanical properties of strengthen layer caused by the grain refinement are finally analyzed on macroscopic and microscopic scales. The results showed that the low-plasticity URSP reduced the volume of the grain and formed nano-crystal with clear grain boundary distribution on the blade surface. The low-plasticity URSP formed a hardened layer with the depth of 70 μm caused by grain refinement and the nano-hardness is increased by 26 \%.",

keywords = "Blade, Nano-crystal, Nano-hardness, Ultrasonic rolling strengthening process",

author = "Dongbo Wu and Yang Zheng and Hui Wang and Hongru Lv and Jiawei Liang and Jie Yu",

note = "Publisher Copyright: {\textcopyright} 2023",

year = "2023",

month = mar,

day = "24",

doi = "10.1016/j.jmapro.2023.01.023",

language = "英语",

volume = "90",

pages = "357--366",

journal = "Journal of Manufacturing Processes",

issn = "1526-6125",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Formation mechanism of nano-crystal on the blade surface produced by low-plasticity ultrasonic rolling strengthening process

AU - Wu, Dongbo

AU - Zheng, Yang

AU - Wang, Hui

AU - Lv, Hongru

AU - Liang, Jiawei

AU - Yu, Jie

PY - 2023/3/24

Y1 - 2023/3/24

N2 - This paper proposes a low-plasticity ultrasonic rolling strengthening process (URSP) to form a surface hardened layer of titanium alloy blade. The process principle of low-plasticity URSP is firstly analyzed, and then the mechanism of titanium alloy blade surface grain refinement is revealed based on the SEM, TEM and EBSD experiment. The mechanical properties of strengthen layer caused by the grain refinement are finally analyzed on macroscopic and microscopic scales. The results showed that the low-plasticity URSP reduced the volume of the grain and formed nano-crystal with clear grain boundary distribution on the blade surface. The low-plasticity URSP formed a hardened layer with the depth of 70 μm caused by grain refinement and the nano-hardness is increased by 26 %.

AB - This paper proposes a low-plasticity ultrasonic rolling strengthening process (URSP) to form a surface hardened layer of titanium alloy blade. The process principle of low-plasticity URSP is firstly analyzed, and then the mechanism of titanium alloy blade surface grain refinement is revealed based on the SEM, TEM and EBSD experiment. The mechanical properties of strengthen layer caused by the grain refinement are finally analyzed on macroscopic and microscopic scales. The results showed that the low-plasticity URSP reduced the volume of the grain and formed nano-crystal with clear grain boundary distribution on the blade surface. The low-plasticity URSP formed a hardened layer with the depth of 70 μm caused by grain refinement and the nano-hardness is increased by 26 %.

KW - Blade

KW - Nano-crystal

KW - Nano-hardness

KW - Ultrasonic rolling strengthening process

UR - https://www.scopus.com/pages/publications/85148544178

U2 - 10.1016/j.jmapro.2023.01.023

DO - 10.1016/j.jmapro.2023.01.023

M3 - 文章

AN - SCOPUS:85148544178

SN - 1526-6125

VL - 90

SP - 357

EP - 366

JO - Journal of Manufacturing Processes

JF - Journal of Manufacturing Processes

ER -

Formation mechanism of nano-crystal on the blade surface produced by low-plasticity ultrasonic rolling strengthening process

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Keywords

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