Structure and Properties of Coarse Grain Heat Affected Zone of Zr Microalloying HSLA Steel

习天辉; 陈晓; 陈颜堂; 浦绍康

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Structure and Properties of Coarse Grain Heat Affected Zone of Zr Microalloying HSLA Steel

更新时间：2026-01-21

- Structure and Properties of Coarse Grain Heat Affected Zone of Zr Microalloying HSLA Steel
- Special Steel Vol. 26, Issue 2, Pages: 16-19(2005)
- 作者机构：
  
  武汉钢铁(集团)公司技术中心,武汉,430080
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：13 October 2004，
  
  Online First：24 April 2023，
  
  Published：24 April 2005
- 稿件说明：
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习天辉, 陈晓, 陈颜堂, et al. Structure and Properties of Coarse Grain Heat Affected Zone of Zr Microalloying HSLA Steel[J]. Special Steel, 2005, 26(2): 16-19.
DOI：

习天辉, 陈晓, 陈颜堂, et al. Structure and Properties of Coarse Grain Heat Affected Zone of Zr Microalloying HSLA Steel[J]. Special Steel, 2005, 26(2): 16-19. DOI：

摘要

用焊接热模拟法研究了Zr处理对 (%):≤ 0.18C-1.2～1.6Mn低合金高强度(HSLA)钢焊接粗晶热影响区(CGHAZ)组织和性能的影响。试验结果表明

Zr含量在0.01%～0.03%时

经过30～100kJ/cm线能量焊接热模拟后

CGHAZ的强度、塑性和-50℃冲击韧性都高于没有经过Zr处理的试验钢;Zr钢显微硬度(HV10)177～251

具有优良的焊接性。焊接线能量相同时

没有经过Zr处理试验钢CGHAZ的晶粒比Zr处理钢粗大;焊接线能量为 30kJ/cm时

各试验钢CGHAZ的组织以贝氏体为主

随着焊接线能量提高

CGHAZ中出现针状铁素体和少量珠光体。

Abstract

The effect of micro Zr on structure and mechanical properties of welding coarse grain heat affected zone (CGHAZ)of ≤0.18C-1.2～1.6Mn HSLA steel has been studied by welding thermal simulation method. The test results showed that with 30~ 100 kJ/cm heat input welding thermal simulation

the strength

plasticity and impact toughness at -50 ℃ of CGHAZ of steel containing 0.01%～0.03% Zr were higher than that steel non-containing Zr

and microhardness HV10 value of Zr steels was 177~251.The Zr steels had excellent weldablity and at same heat input the grain in CGHAZ of non-containing steel was coarser than that of Zr steel and with heat input of 30 kJ/cm the bainite was dominant in structure of CGHAZ while with increasing the heat input the acicular ferrite and few pearlite occured in CGHAZ.

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