International Journal For Multidisciplinary Research

E-ISSN: 2582-2160   •   Impact Factor: 9.24

A Widely Indexed Open Access Peer Reviewed Multidisciplinary Bi-monthly Scholarly International Journal

Call for Paper Volume 8, Issue 5 (September-October 2026) Submit your research before last 3 days of October to publish your research paper in the issue of September-October.
Submit Research Paper Join as a Reviewer

Plagiarism is checked by the leading plagiarism checker TurnItIn

Call for Paper

Volume 8 Issue 5
September-October 2026

Submit your research paper

Indexing Partners
Academia Advanced Sciences Index Bielefeld Academic Search Engine CiteSeer DRJI Google Scholar Independent Search Engine & Directory Network ISI (International Scientific Indexing) Issuu Mendeley Research Networks
RefSeek ResearcherId - Thomson Reuters ResearchGate Scirus Scribd Semantic Scholar UTeM - Universiti Teknikal Malaysia Melaka Wiki for Call for Papers WorldCat Zenodo

Passive Perforated Flow-Masking for Transformation-Timing Synchronisation during Oil Quenching: Mechanism, Boundary Conditions, and Experimental Protocol

Author(s) Mr. Jyotirishwar Kumar
Country India
Abstract Quench distortion in medium-carbon steel components — ovality and longitudinal bow in shafts, warpage in flat plates — is driven fundamentally by spatial non-uniformity in the local heat-transfer coefficient h(t) across a component's surface during immersion cooling, which desynchronises the timing of the martensitic transformation between end, mid-section, edge, and core regions (Canale & Totten, 2005; Şimşir & Gür, 2008). This paper presents a reproducible mechanism-and-protocol framework for evaluating a passive, perforated flow-masking fixture as a heat-transfer-redistribution strategy during oil quenching. The fixture is designed to modify local heat-transfer-coefficient histories — suppressing high-velocity impingement and edge-dominated cooling at selected zones — without inducing sustained vapour blanketing at the masked zone. The design objective is not uniform flow velocity around the part, but controlled synchronisation of transformation timing across end, mid-section, edge, and core regions. We specify: the fixture mechanism and its theoretical boundary conditions, including two explicit failure modes (over-masking and under-masking) that bound the design space (Section 3); a six-cell perforation design-of-experiments (DOE) spanning unmasked, four intermediate open-area fractions, and a deliberately over-masked solid-shroud control (Section 5.3); a phased validation architecture that separates an initial pilot-scale feasibility phase from the full DOE (Section 6); a randomised, position-controlled experimental protocol for oil-quenched EN8/AISI-1040 shafts and medium-carbon steel plates, covering four-point thermocouple logging, distortion metrology, surface-to-core hardness mapping, and microstructural and residual-stress characterisation (Section 5); an inverse heat-transfer-coefficient estimation method and a transformation-timing (Ms–Mf interval) extraction method (Sections 3.2–3.3); a sample-size and statistical-power rationale (Section 5.6); and a risk register covering over-masking, under-masking, hardness loss, and instrumentation failure modes (Section 5.8). This manuscript does not report completed experimental outcomes, and no percentage distortion reduction, p-value, or effect size is claimed for the present fixture design. Instead, it establishes a falsifiable validation framework — mechanism, DOE, phased protocol, and analysis plan — for future experimental execution. A resource-constrained manufacturing context (MSME heat-treatment operations) is used only to motivate the fixture's low-cost, retrofit-only design constraints and to frame a subsequent field-trial component; it is not the paper's scientific contribution.
Keywords quench distortion; heat-transfer coefficient; transformation-timing synchronisation; passive flow-masking fixture; inverse heat conduction; oil quenching; medium-carbon steel; experimental protocol
Field Physics > Mechanical Engineering
Published In Volume 8, Issue 5, September-October 2026
Published On 2026-09-19
DOI https://doi.org/10.36948/ijfmr.2026.v08i05.87965
View / Download PDF File

Share this



E-ISSN 2582-2160
CrossRef

CrossRef DOI prefix of IJFMR is 10.36948/ijfmr

Downloads
Research Paper Format Copyright Permission Form and Undertaking Form

All research papers published on this website are licensed under Creative Commons Attribution-ShareAlike 4.0 International License, and all rights belong to their respective authors/researchers.

CC-BY-SA Open Access

About IJFMR
Fees & Payment
Current Issue
Publication Archive 		Submit Research Paper
Track Submission Status
Publication Guidelines
Publication Ethics
Peer Review & Plagiarism 		Join as a Reviewer
Editors & Reviewers
Reviewer Referral Program
Get Reviewer Membership Certi. 		Website/Journal Policies
Usage Policy
Content Policies
Privacy Policy
Contact Us +91-9687-828-838 editor@ijfmr.com
Powered by Sky Research Publication and Journals